/* =====================================================
   EDUMASTER PRO X - ULTIMATE CSS FRAMEWORK v2.0
   =====================================================
   File: styles.css
   Description: Premium School Management System Styles
   Version: 2.0.0
   Author: Asha Modern School
   ===================================================== */

/* ===================================================== */
/* TABLE OF CONTENTS
/* ===================================================== */
/*
1.  CSS Variables & Theme Configuration
2.  Reset & Base Styles
3.  Typography System
4.  Layout & Grid System
5.  Sidebar Navigation
6.  Header & Top Bar
7.  Cards & Containers
8.  Statistics Cards
9.  Charts & Graphs
10. Tables & Data Grids
11. Forms & Inputs
12. Buttons & Actions
13. Modals & Dialogs
14. Tabs & Navigation
15. Filter Bar
16. Badges & Status Indicators
17. Attendance System
18. Animations & Keyframes
19. Loading States
20. Toast Notifications
21. Certificate Styles
22. ID Card Styles
23. Staff Management
24. Responsive Design
25. Print Styles
26. Utility Classes
27. Dark Theme Overrides
28. Advanced Effects
29. Micro-interactions
30. Performance Optimizations
*/

/* ===================================================== */
/* 1. CSS VARIABLES & THEME CONFIGURATION
/* ===================================================== */

:root {
    /* Primary Colors - Premium Indigo */
    --primary-50: #eef2ff;
    --primary-100: #e0e7ff;
    --primary-200: #c7d2fe;
    --primary-300: #a5b4fc;
    --primary-400: #818cf8;
    --primary-500: #6366f1;
    --primary-600: #4f46e5;
    --primary-700: #4338ca;
    --primary-800: #3730a3;
    --primary-900: #312e81;
    --primary-950: #1e1b4b;

    /* Secondary Colors - Emerald */
    --secondary-50: #ecfdf5;
    --secondary-100: #d1fae5;
    --secondary-200: #a7f3d0;
    --secondary-300: #6ee7b7;
    --secondary-400: #34d399;
    --secondary-500: #10b981;
    --secondary-600: #059669;
    --secondary-700: #047857;
    --secondary-800: #065f46;
    --secondary-900: #064e3b;

    /* Accent Colors - Amber */
    --accent-50: #fffbeb;
    --accent-100: #fef3c7;
    --accent-200: #fde68a;
    --accent-300: #fcd34d;
    --accent-400: #fbbf24;
    --accent-500: #f59e0b;
    --accent-600: #d97706;
    --accent-700: #b45309;
    --accent-800: #92400e;
    --accent-900: #78350f;

    /* Danger/Error Colors - Rose */
    --danger-50: #fff1f2;
    --danger-100: #ffe4e6;
    --danger-200: #fecdd3;
    --danger-300: #fda4af;
    --danger-400: #fb7185;
    --danger-500: #f43f5e;
    --danger-600: #e11d48;
    --danger-700: #be123c;
    --danger-800: #9f1239;
    --danger-900: #881337;

    /* Success Colors - Green */
    --success-50: #f0fdf4;
    --success-100: #dcfce7;
    --success-200: #bbf7d0;
    --success-300: #86efac;
    --success-400: #4ade80;
    --success-500: #22c55e;
    --success-600: #16a34a;
    --success-700: #15803d;
    --success-800: #166534;
    --success-900: #14532d;

    /* Warning Colors - Orange */
    --warning-50: #fff7ed;
    --warning-100: #ffedd5;
    --warning-200: #fed7aa;
    --warning-300: #fdba74;
    --warning-400: #fb923c;
    --warning-500: #f97316;
    --warning-600: #ea580c;
    --warning-700: #c2410c;
    --warning-800: #9a3412;
    --warning-900: #7c2d12;

    /* Info Colors - Sky */
    --info-50: #f0f9ff;
    --info-100: #e0f2fe;
    --info-200: #bae6fd;
    --info-300: #7dd3fc;
    --info-400: #38bdf8;
    --info-500: #0ea5e9;
    --info-600: #0284c7;
    --info-700: #0369a1;
    --info-800: #075985;
    --info-900: #0c4a6e;

    /* Neutral/Gray Scale */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --gray-950: #030712;

    /* Layout Dimensions */
    --sidebar-width: 300px;
    --sidebar-collapsed-width: 90px;
    --header-height: 80px;
    --footer-height: 60px;

    /* Border Radius Scale */
    --radius-xs: 4px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 24px;
    --radius-3xl: 32px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    --shadow-inner: inset 0 2px 4px 0 rgb(0 0 0 / 0.05);
    --shadow-glow: 0 0 15px rgba(99, 102, 241, 0.5);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

    /* Z-Index Scale */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    --z-toast: 1080;

    /* Font Families */
    --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;

    /* Spacing Scale */
    --spacing-0: 0;
    --spacing-px: 1px;
    --spacing-0\.5: 0.125rem;
    --spacing-1: 0.25rem;
    --spacing-1\.5: 0.375rem;
    --spacing-2: 0.5rem;
    --spacing-2\.5: 0.625rem;
    --spacing-3: 0.75rem;
    --spacing-3\.5: 0.875rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-7: 1.75rem;
    --spacing-8: 2rem;
    --spacing-9: 2.25rem;
    --spacing-10: 2.5rem;
    --spacing-11: 2.75rem;
    --spacing-12: 3rem;
    --spacing-14: 3.5rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    --spacing-24: 6rem;
    --spacing-28: 7rem;
    --spacing-32: 8rem;
    --spacing-36: 9rem;
    --spacing-40: 10rem;
    --spacing-44: 11rem;
    --spacing-48: 12rem;
    --spacing-52: 13rem;
    --spacing-56: 14rem;
    --spacing-60: 15rem;
    --spacing-64: 16rem;
    --spacing-72: 18rem;
    --spacing-80: 20rem;
    --spacing-96: 24rem;
}

/* Dark Theme Variables */
[data-theme="dark"] {
    /* Primary Colors - Dark Mode */
    --primary-50: #1e1b4b;
    --primary-100: #312e81;
    --primary-200: #3730a3;
    --primary-300: #4338ca;
    --primary-400: #4f46e5;
    --primary-500: #6366f1;
    --primary-600: #818cf8;
    --primary-700: #a5b4fc;
    --primary-800: #c7d2fe;
    --primary-900: #e0e7ff;

    /* Neutral Scale - Dark Mode */
    --gray-50: #030712;
    --gray-100: #111827;
    --gray-200: #1f2937;
    --gray-300: #374151;
    --gray-400: #4b5563;
    --gray-500: #6b7280;
    --gray-600: #9ca3af;
    --gray-700: #d1d5db;
    --gray-800: #e5e7eb;
    --gray-900: #f3f4f6;

    /* Background & Text */
    background-color: var(--gray-100);
    color: var(--gray-800);

    /* Shadow Adjustments */
    --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.5);
}

/* ===================================================== */
/* 2. RESET & BASE STYLES
/* ===================================================== */

*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--gray-50);
    color: var(--gray-900);
    line-height: 1.5;
    font-weight: 400;
    overflow-x: hidden;
    transition: background-color var(--transition-base), color var(--transition-base);
}

/* Selection Styling */
::selection {
    background-color: var(--primary-500);
    color: white;
    text-shadow: none;
}

::-moz-selection {
    background-color: var(--primary-500);
    color: white;
    text-shadow: none;
}

/* Focus Styles */
:focus-visible {
    outline: 3px solid var(--primary-400);
    outline-offset: 2px;
}

/* Remove default button styles */
button {
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
}

/* ===================================================== */
/* 3. TYPOGRAPHY SYSTEM
/* ===================================================== */

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--gray-900);
    margin-bottom: var(--spacing-4);
}

h1 {
    font-size: var(--text-4xl);
    letter-spacing: -0.02em;
}

h2 {
    font-size: var(--text-3xl);
    letter-spacing: -0.01em;
}

h3 {
    font-size: var(--text-2xl);
}

h4 {
    font-size: var(--text-xl);
}

h5 {
    font-size: var(--text-lg);
}

h6 {
    font-size: var(--text-base);
}

p {
    margin-bottom: var(--spacing-4);
    color: var(--gray-600);
}

.text-gradient {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-800));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-gradient-secondary {
    background: linear-gradient(135deg, var(--secondary-500), var(--secondary-700));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.text-gradient-accent {
    background: linear-gradient(135deg, var(--accent-500), var(--accent-700));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* ===================================================== */
/* 4. LAYOUT & GRID SYSTEM
/* ===================================================== */

.app-container {
    display: flex;
    min-height: 100vh;
    position: relative;
}

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    transition: margin-left var(--transition-base);
    min-height: 100vh;
    background: var(--gray-50);
}

.main-content.expanded {
    margin-left: var(--sidebar-collapsed-width);
}

.content-wrapper {
    padding: var(--spacing-6);
    animation: fadeInUp 0.6s ease;
}

/* Grid Systems */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-8);
}

.chart-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-8);
}

.activity-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: var(--spacing-6);
}

/* ===================================================== */
/* 5. SIDEBAR NAVIGATION
/* ===================================================== */

.sidebar {
    width: var(--sidebar-width);
    background: white;
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-xl);
    overflow-y: auto;
    z-index: var(--z-fixed);
    border-right: 1px solid var(--gray-200);
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed-width);
}

.sidebar.collapsed .sidebar-link span,
.sidebar.collapsed .sidebar-heading,
.sidebar.collapsed .logo-text {
    display: none;
}

.sidebar.collapsed .sidebar-link {
    justify-content: center;
    padding: var(--spacing-3);
}

.sidebar.collapsed .sidebar-link i {
    margin: 0;
    font-size: var(--text-xl);
}

.sidebar-header {
    padding: var(--spacing-6) var(--spacing-5);
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 0;
    background: white;
    z-index: 10;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
}

[data-theme="dark"] .sidebar-header {
    background: rgba(31, 41, 55, 0.95);
}

.logo-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.logo-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary-600), var(--primary-800));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--text-2xl);
    font-weight: 800;
    transition: transform var(--transition-bounce);
    box-shadow: var(--shadow-glow);
}

.logo-wrapper:hover .logo-icon {
    transform: rotate(360deg) scale(1.1);
}

.logo-text {
    font-size: var(--text-xl);
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-600), var(--primary-800));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.02em;
}

.toggle-btn {
    width: 40px;
    height: 40px;
    border: none;
    background: var(--gray-100);
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-600);
    transition: all var(--transition-fast);
}

.toggle-btn:hover {
    background: var(--primary-500);
    color: white;
    transform: scale(1.1) rotate(180deg);
    box-shadow: var(--shadow-glow);
}

.sidebar-menu {
    padding: var(--spacing-5) var(--spacing-4);
}

.sidebar-heading {
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--gray-500);
    margin: var(--spacing-6) 0 var(--spacing-3) var(--spacing-4);
    font-weight: 700;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-4);
    color: var(--gray-600);
    text-decoration: none;
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    margin-bottom: var(--spacing-1);
    cursor: pointer;
    position: relative;
    font-weight: 600;
    font-size: var(--text-sm);
}

.sidebar-link i {
    width: 24px;
    font-size: var(--text-lg);
    transition: transform var(--transition-fast);
}

.sidebar-link:hover {
    background: var(--gray-100);
    color: var(--primary-600);
    transform: translateX(5px);
}

.sidebar-link:hover i {
    transform: scale(1.2);
}

.sidebar-link.active {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    color: white;
    box-shadow: var(--shadow-lg);
    animation: glowPulse 2s infinite;
}

.sidebar-link.active::before {
    content: '';
    position: absolute;
    left: -16px;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 30px;
    background: linear-gradient(to bottom, var(--primary-400), var(--primary-600));
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* ===================================================== */
/* 6. HEADER & TOP BAR
/* ===================================================== */

.top-header {
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-8);
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .top-header {
    background: rgba(31, 41, 55, 0.8);
}

.page-title {
    font-size: var(--text-3xl);
    font-weight: 800;
    background: linear-gradient(135deg, var(--gray-900), var(--gray-700));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.02em;
    position: relative;
}

.page-title::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 60px;
    height: 4px;
    background: linear-gradient(to right, var(--primary-500), var(--primary-600));
    border-radius: var(--radius-full);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-5);
}

.search-box {
    display: flex;
    align-items: center;
    background: var(--gray-100);
    border-radius: var(--radius-full);
    padding: var(--spacing-3) var(--spacing-6);
    width: 380px;
    transition: all var(--transition-base);
    border: 2px solid transparent;
    box-shadow: var(--shadow-inner);
}

.search-box:focus-within {
    border-color: var(--primary-500);
    background: white;
    box-shadow: 0 0 0 4px var(--primary-100);
    transform: scale(1.02);
}

.search-box i {
    color: var(--gray-500);
    margin-right: var(--spacing-3);
    font-size: var(--text-lg);
}

.search-box input {
    border: none;
    background: transparent;
    outline: none;
    width: 100%;
    font-size: var(--text-sm);
    color: var(--gray-700);
}

.search-box input::placeholder {
    color: var(--gray-400);
}

.notification-btn {
    position: relative;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    background: var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.notification-btn:hover {
    background: var(--primary-500);
    color: white;
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.notification-btn:hover .notification-badge {
    background: white;
    color: var(--primary-600);
}

.notification-badge {
    position: absolute;
    top: -6px;
    right: -6px;
    background: linear-gradient(135deg, var(--danger-500), var(--danger-600));
    color: white;
    width: 24px;
    height: 24px;
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    border: 2px solid white;
    animation: pulse 2s infinite;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    cursor: pointer;
    padding: var(--spacing-2) var(--spacing-5);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    background: var(--gray-100);
    box-shadow: var(--shadow-sm);
    border: 1px solid transparent;
}

.user-profile:hover {
    background: var(--gray-200);
    transform: translateY(-3px);
    border-color: var(--primary-500);
    box-shadow: var(--shadow-glow);
}

.user-avatar {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--primary-500), var(--primary-700));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--text-lg);
    box-shadow: var(--shadow-md);
}

.user-info {
    line-height: 1.4;
}

.user-name {
    font-weight: 700;
    font-size: var(--text-sm);
    color: var(--gray-800);
}

.user-role {
    font-size: var(--text-xs);
    color: var(--gray-500);
    font-weight: 500;
}

/* ===================================================== */
/* 7. CARDS & CONTAINERS
/* ===================================================== */

.stat-card,
.chart-card,
.activity-card,
.form-container,
.table-container {
    background: white;
    border-radius: var(--radius-2xl);
    padding: var(--spacing-6);
    box-shadow: var(--shadow-xl);
    transition: all var(--transition-base);
    border: 1px solid var(--gray-200);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
}

[data-theme="dark"] .stat-card,
[data-theme="dark"] .chart-card,
[data-theme="dark"] .activity-card,
[data-theme="dark"] .form-container,
[data-theme="dark"] .table-container {
    background: rgba(31, 41, 55, 0.95);
}

.stat-card::before,
.chart-card::before,
.activity-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, var(--primary-100), transparent 70%);
    border-radius: 50%;
    opacity: 0.3;
    transition: all var(--transition-slow);
    pointer-events: none;
}

.stat-card:hover::before,
.chart-card:hover::before,
.activity-card:hover::before {
    transform: scale(1.5);
    opacity: 0.5;
}

.stat-card:hover,
.chart-card:hover,
.activity-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-2xl);
    border-color: var(--primary-300);
}

.stat-card {
    cursor: pointer;
}

.stat-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    margin-bottom: var(--spacing-5);
    position: relative;
    z-index: 1;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-bounce);
}

.stat-card:hover .stat-icon {
    transform: rotate(15deg) scale(1.1);
}

.stat-icon.students {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    color: white;
}

.stat-icon.teachers {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
}

.stat-icon.parents {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
}

.stat-icon.staff {
    background: linear-gradient(135deg, #8b5cf6, #7c3aed);
    color: white;
}

.stat-icon.classes {
    background: linear-gradient(135deg, #ec4899, #db2777);
    color: white;
}

.stat-icon.fee {
    background: linear-gradient(135deg, #14b8a6, #0d9488);
    color: white;
}

.stat-value {
    font-size: var(--text-4xl);
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: var(--spacing-1);
    line-height: 1;
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--gray-500);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-trend {
    position: absolute;
    top: var(--spacing-6);
    right: var(--spacing-6);
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
    font-size: var(--text-xs);
    font-weight: 700;
    padding: var(--spacing-2) var(--spacing-4);
    border-radius: var(--radius-full);
    background: var(--gray-100);
    border: 1px solid var(--gray-200);
}

.trend-up {
    color: var(--success-600);
}

.trend-up i {
    color: var(--success-600);
    animation: bounceUp 1s infinite;
}

.trend-down {
    color: var(--danger-600);
}

.trend-down i {
    color: var(--danger-600);
    animation: bounceDown 1s infinite;
}

/* ===================================================== */
/* 8. CHARTS & GRAPHS
/* ===================================================== */

.chart-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-5);
}

.chart-title {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--gray-800);
    position: relative;
    padding-left: var(--spacing-3);
}

.chart-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 20px;
    background: linear-gradient(to bottom, var(--primary-500), var(--primary-600));
    border-radius: var(--radius-full);
}

.chart-actions {
    display: flex;
    gap: var(--spacing-2);
}

.chart-actions button {
    padding: var(--spacing-2) var(--spacing-4);
    border: 1px solid var(--gray-200);
    background: white;
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--gray-600);
}

.chart-actions button:hover {
    background: var(--primary-500);
    color: white;
    border-color: var(--primary-500);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.chart-actions button.active {
    background: var(--primary-500);
    color: white;
    border-color: var(--primary-500);
}

.chart-container {
    height: 320px;
    position: relative;
    width: 100%;
}

/* ===================================================== */
/* 9. TABLES & DATA GRIDS
/* ===================================================== */

.table-container {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.data-table th {
    text-align: left;
    padding: var(--spacing-4) var(--spacing-3);
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--gray-600);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 2px solid var(--gray-200);
    background: var(--gray-50);
    position: sticky;
    top: 0;
    z-index: 10;
}

.data-table td {
    padding: var(--spacing-4) var(--spacing-3);
    font-size: var(--text-sm);
    border-bottom: 1px solid var(--gray-200);
    color: var(--gray-700);
    transition: all var(--transition-fast);
}

.data-table tbody tr {
    transition: all var(--transition-fast);
    cursor: pointer;
}

.data-table tbody tr:hover {
    background: var(--gray-50);
    transform: scale(1.01);
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-lg);
}

.data-table tbody tr:hover td:first-child {
    border-top-left-radius: var(--radius-lg);
    border-bottom-left-radius: var(--radius-lg);
}

.data-table tbody tr:hover td:last-child {
    border-top-right-radius: var(--radius-lg);
    border-bottom-right-radius: var(--radius-lg);
}

/* ===================================================== */
/* 10. FORMS & INPUTS
/* ===================================================== */

.form-container {
    max-width: 900px;
    margin: 0 auto;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-8);
}

.form-group {
    margin-bottom: var(--spacing-5);
}

.form-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: var(--spacing-2);
}

.form-label span {
    color: var(--danger-500);
    margin-left: var(--spacing-1);
}

.form-control {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    font-size: var(--text-sm);
    transition: all var(--transition-fast);
    outline: none;
    background: white;
    color: var(--gray-800);
}

[data-theme="dark"] .form-control {
    background: var(--gray-200);
    color: var(--gray-800);
    border-color: var(--gray-300);
}

.form-control:focus {
    border-color: var(--primary-500);
    box-shadow: 0 0 0 4px var(--primary-100);
    transform: scale(1.02);
}

.form-control:hover:not(:focus) {
    border-color: var(--gray-400);
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3E%3Cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3E%3C/svg%3E");
    background-position: right var(--spacing-3) center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: var(--spacing-10);
}

textarea.form-control {
    min-height: 100px;
    resize: vertical;
}

.file-upload {
    border: 2px dashed var(--gray-300);
    border-radius: var(--radius-xl);
    padding: var(--spacing-8);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
    background: var(--gray-50);
    position: relative;
    overflow: hidden;
}

.file-upload::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, var(--primary-100), transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.file-upload:hover::before {
    opacity: 0.5;
}

.file-upload:hover {
    border-color: var(--primary-500);
    background: var(--primary-50);
    transform: scale(1.02);
    box-shadow: var(--shadow-glow);
}

.file-upload i {
    font-size: 48px;
    color: var(--primary-500);
    margin-bottom: var(--spacing-4);
    animation: bounce 2s infinite;
}

.file-upload p {
    color: var(--gray-600);
    font-size: var(--text-base);
    font-weight: 500;
}

/* ===================================================== */
/* 11. BUTTONS & ACTIONS
/* ===================================================== */

.btn-group {
    display: flex;
    gap: var(--spacing-4);
    justify-content: flex-end;
    margin-top: var(--spacing-8);
    flex-wrap: wrap;
}

.btn {
    padding: var(--spacing-3) var(--spacing-8);
    border: none;
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-base);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    position: relative;
    overflow: hidden;
    letter-spacing: 0.02em;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn i {
    font-size: var(--text-base);
    transition: transform var(--transition-fast);
}

.btn:hover i {
    transform: translateX(5px);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    color: white;
    box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-2xl);
    background: linear-gradient(135deg, var(--primary-700), var(--primary-800));
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary-500), var(--secondary-600));
    color: white;
    box-shadow: var(--shadow-lg);
}

.btn-secondary:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-2xl);
    background: linear-gradient(135deg, var(--secondary-600), var(--secondary-700));
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--gray-300);
    color: var(--gray-700);
}

.btn-outline:hover {
    border-color: var(--primary-500);
    color: var(--primary-500);
    transform: translateY(-2px);
    background: var(--primary-50);
}

.btn-sm {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--text-xs);
}

.btn-lg {
    padding: var(--spacing-4) var(--spacing-10);
    font-size: var(--text-base);
}

.btn-block {
    width: 100%;
    justify-content: center;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: var(--spacing-2);
}

.action-btn {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-md);
    border: none;
    background: var(--gray-100);
    color: var(--gray-600);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-sm);
    position: relative;
    overflow: hidden;
}

.action-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.3s, height 0.3s;
}

.action-btn:hover::before {
    width: 50px;
    height: 50px;
}

.action-btn:hover {
    transform: translateY(-3px) scale(1.1);
    box-shadow: var(--shadow-glow);
}

.action-btn.view:hover {
    background: linear-gradient(135deg, var(--info-500), var(--info-600));
    color: white;
}

.action-btn.edit:hover {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    color: white;
}

.action-btn.delete:hover {
    background: linear-gradient(135deg, var(--danger-500), var(--danger-600));
    color: white;
}

/* ===================================================== */
/* 12. MODALS & DIALOGS
/* ===================================================== */

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(8px);
    z-index: var(--z-modal-backdrop);
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: var(--radius-2xl);
    width: 600px;
    max-width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlideIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: var(--shadow-2xl);
    border: 1px solid var(--gray-200);
}

[data-theme="dark"] .modal-content {
    background: var(--gray-100);
}

@keyframes modalSlideIn {
    from {
        transform: translateY(-50px) scale(0.9);
        opacity: 0;
    }
    to {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
}

.modal-header {
    padding: var(--spacing-6);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    background: inherit;
    border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
    z-index: 5;
}

.modal-title {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--gray-800);
    background: linear-gradient(135deg, var(--primary-600), var(--primary-800));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.modal-close {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    border: none;
    background: var(--gray-100);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    color: var(--gray-600);
}

.modal-close:hover {
    background: linear-gradient(135deg, var(--danger-500), var(--danger-600));
    color: white;
    transform: rotate(90deg) scale(1.1);
    box-shadow: var(--shadow-glow);
}

.modal-body {
    padding: var(--spacing-6);
}

.modal-footer {
    padding: var(--spacing-6);
    border-top: 1px solid var(--gray-200);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-4);
    position: sticky;
    bottom: 0;
    background: inherit;
    border-radius: 0 0 var(--radius-2xl) var(--radius-2xl);
}

/* ===================================================== */
/* 13. TABS & NAVIGATION
/* ===================================================== */

.tabs {
    display: flex;
    gap: var(--spacing-2);
    border-bottom: 2px solid var(--gray-200);
    margin-bottom: var(--spacing-6);
    flex-wrap: wrap;
    padding: 0 var(--spacing-2);
}

.tab {
    padding: var(--spacing-3) var(--spacing-6);
    font-weight: 600;
    color: var(--gray-600);
    cursor: pointer;
    position: relative;
    transition: all var(--transition-fast);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    font-size: var(--text-sm);
}

.tab:hover {
    color: var(--primary-600);
    background: var(--gray-100);
    transform: translateY(-2px);
}

.tab.active {
    color: var(--primary-600);
    font-weight: 700;
}

.tab.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-500), var(--primary-600));
    border-radius: var(--radius-full) var(--radius-full) 0 0;
    animation: slideInWidth 0.3s ease;
}

@keyframes slideInWidth {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

.tab-content {
    display: none;
    animation: fadeIn 0.5s ease;
}

.tab-content.active {
    display: block;
}

/* ===================================================== */
/* 14. FILTER BAR
/* ===================================================== */

.filter-bar {
    display: flex;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-6);
    flex-wrap: wrap;
    align-items: center;
    padding: var(--spacing-4) var(--spacing-6);
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-200);
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
}

[data-theme="dark"] .filter-bar {
    background: rgba(31, 41, 55, 0.95);
}

.filter-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.filter-label {
    font-weight: 600;
    font-size: var(--text-xs);
    color: var(--gray-700);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.filter-select {
    padding: var(--spacing-2) var(--spacing-4);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-full);
    outline: none;
    font-size: var(--text-xs);
    background: white;
    min-width: 160px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-select:hover {
    border-color: var(--primary-500);
    background: var(--primary-50);
}

.filter-select:focus {
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px var(--primary-100);
}

/* ===================================================== */
/* 15. BADGES & STATUS INDICATORS
/* ===================================================== */

.badge-count {
    margin-left: auto;
    background: linear-gradient(135deg, var(--danger-500), var(--danger-600));
    color: white;
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-full);
    font-size: 10px;
    font-weight: 700;
    animation: pulse 2s infinite;
    box-shadow: var(--shadow-md);
}

.status-badge {
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: 700;
    display: inline-block;
    animation: fadeIn 0.5s ease;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    border: 1px solid transparent;
    box-shadow: var(--shadow-sm);
}

.status-paid {
    background: linear-gradient(135deg, #10b98120, #05966920);
    color: var(--success-700);
    border-color: var(--success-300);
}

.status-pending {
    background: linear-gradient(135deg, #f59e0b20, #d9770620);
    color: var(--accent-700);
    border-color: var(--accent-300);
}

.status-overdue {
    background: linear-gradient(135deg, #ef444420, #dc262620);
    color: var(--danger-700);
    border-color: var(--danger-300);
}

.status-active {
    background: linear-gradient(135deg, #3b82f620, #1d4ed820);
    color: var(--info-700);
    border-color: var(--info-300);
}

/* ===================================================== */
/* 16. ATTENDANCE SYSTEM
/* ===================================================== */

.attendance-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: var(--spacing-4);
    margin-top: var(--spacing-5);
}

.attendance-card {
    background: white;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-xl);
    padding: var(--spacing-4);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.attendance-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, var(--primary-100), transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
}

.attendance-card:hover {
    transform: translateY(-6px) scale(1.02);
    box-shadow: var(--shadow-2xl);
    border-color: var(--primary-500);
}

.attendance-card:hover::before {
    opacity: 0.5;
}

.attendance-card.present {
    background: linear-gradient(135deg, #10b98110, #05966910);
    border-color: var(--success-500);
}

.attendance-card.absent {
    background: linear-gradient(135deg, #ef444410, #dc262610);
    border-color: var(--danger-500);
}

.attendance-card.late {
    background: linear-gradient(135deg, #f59e0b10, #d9770610);
    border-color: var(--accent-500);
}

.attendance-card.holiday {
    background: linear-gradient(135deg, #8b5cf610, #7c3aed10);
    border-color: var(--primary-500);
}

.student-avatar {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--gray-200), var(--gray-300));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-3);
    color: var(--gray-700);
    font-size: var(--text-2xl);
    font-weight: 600;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-bounce);
}

.attendance-card:hover .student-avatar {
    transform: rotate(360deg) scale(1.1);
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    color: white;
}

.student-name {
    font-weight: 700;
    font-size: var(--text-base);
    color: var(--gray-800);
    margin-bottom: var(--spacing-1);
}

.student-roll {
    font-size: var(--text-xs);
    color: var(--gray-500);
    font-weight: 500;
    margin-bottom: var(--spacing-3);
}

.attendance-actions {
    display: flex;
    gap: var(--spacing-2);
    justify-content: center;
    margin-top: var(--spacing-3);
}

.attendance-btn {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    border: 2px solid var(--gray-200);
    background: white;
    font-weight: 700;
    font-size: var(--text-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.attendance-btn:hover {
    transform: translateY(-3px);
    border-color: var(--primary-500);
    background: var(--primary-500);
    color: white;
    box-shadow: var(--shadow-glow);
}

.attendance-btn.present.active {
    background: var(--success-500);
    color: white;
    border-color: var(--success-600);
}

.attendance-btn.absent.active {
    background: var(--danger-500);
    color: white;
    border-color: var(--danger-600);
}

.attendance-btn.late.active {
    background: var(--accent-500);
    color: white;
    border-color: var(--accent-600);
}

.attendance-btn.holiday.active {
    background: var(--primary-500);
    color: white;
    border-color: var(--primary-600);
}

/* ===================================================== */
/* 17. ANIMATIONS & KEYFRAMES
/* ===================================================== */

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideIn {
    from {
        transform: translateX(-100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes bounceUp {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-5px);
    }
}

@keyframes bounceDown {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(5px);
    }
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

@keyframes glowPulse {
    0% {
        box-shadow: 0 0 5px rgba(99, 102, 241, 0.5);
    }
    50% {
        box-shadow: 0 0 20px rgba(99, 102, 241, 0.8);
    }
    100% {
        box-shadow: 0 0 5px rgba(99, 102, 241, 0.5);
    }
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

@keyframes scalePulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

/* Animation Classes */
.animate-fade-in {
    animation: fadeIn 0.5s ease;
}

.animate-fade-in-up {
    animation: fadeInUp 0.5s ease;
}

.animate-fade-in-down {
    animation: fadeInDown 0.5s ease;
}

.animate-fade-in-left {
    animation: fadeInLeft 0.5s ease;
}

.animate-fade-in-right {
    animation: fadeInRight 0.5s ease;
}

.animate-slide-in {
    animation: slideIn 0.5s ease;
}

.animate-slide-in-right {
    animation: slideInRight 0.5s ease;
}

.animate-pulse {
    animation: pulse 2s infinite;
}

.animate-bounce {
    animation: bounce 2s infinite;
}

.animate-spin {
    animation: spin 2s linear infinite;
}

.animate-glow {
    animation: glowPulse 2s infinite;
}

.animate-float {
    animation: float 3s ease-in-out infinite;
}

.animate-scale-pulse {
    animation: scalePulse 2s infinite;
}

/* Hover Animations */
.hover-scale {
    transition: transform var(--transition-base);
}

.hover-scale:hover {
    transform: scale(1.05);
}

.hover-rotate {
    transition: transform var(--transition-base);
}

.hover-rotate:hover {
    transform: rotate(5deg);
}

.hover-lift {
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-2xl);
}

.hover-glow:hover {
    box-shadow: var(--shadow-glow);
}

/* ===================================================== */
/* 18. LOADING STATES
/* ===================================================== */

.loading {
    position: relative;
    pointer-events: none;
    opacity: 0.7;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 40px;
    height: 40px;
    margin-top: -20px;
    margin-left: -20px;
    border: 3px solid var(--gray-200);
    border-top-color: var(--primary-500);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--gray-200);
    border-top-color: var(--primary-500);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.spinner-sm {
    width: 30px;
    height: 30px;
    border-width: 3px;
}

.spinner-lg {
    width: 70px;
    height: 70px;
    border-width: 5px;
}

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--gray-200) 25%,
        var(--gray-100) 50%,
        var(--gray-200) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-md);
}

.skeleton-text {
    height: 1em;
    margin-bottom: 0.5em;
}

.skeleton-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
}

.skeleton-button {
    width: 100px;
    height: 40px;
}

/* ===================================================== */
/* 19. TOAST NOTIFICATIONS
/* ===================================================== */

.toast {
    position: fixed;
    top: var(--spacing-5);
    right: var(--spacing-5);
    padding: var(--spacing-4) var(--spacing-6);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-2xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    z-index: var(--z-toast);
    animation: slideInRight 0.3s ease;
    border-left: 4px solid var(--primary-500);
    min-width: 300px;
    max-width: 400px;
}

.toast.success {
    border-left-color: var(--success-500);
}

.toast.success i {
    color: var(--success-500);
}

.toast.error {
    border-left-color: var(--danger-500);
}

.toast.error i {
    color: var(--danger-500);
}

.toast.warning {
    border-left-color: var(--accent-500);
}

.toast.warning i {
    color: var(--accent-500);
}

.toast-icon {
    font-size: var(--text-xl);
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 700;
    font-size: var(--text-sm);
    color: var(--gray-800);
    margin-bottom: var(--spacing-1);
}

.toast-message {
    font-size: var(--text-xs);
    color: var(--gray-600);
}

.toast-close {
    width: 30px;
    height: 30px;
    border-radius: var(--radius-md);
    border: none;
    background: var(--gray-100);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-600);
    transition: all var(--transition-fast);
}

.toast-close:hover {
    background: var(--danger-500);
    color: white;
    transform: rotate(90deg);
}

/* ===================================================== */
/* 20. PAGINATION
/* ===================================================== */

.pagination {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-2);
    margin-top: var(--spacing-6);
    flex-wrap: wrap;
}

.pagination-btn {
    width: 44px;
    height: 44px;
    border: 1px solid var(--gray-200);
    background: white;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--gray-700);
}

.pagination-btn:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    color: white;
    border-color: var(--primary-500);
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: var(--gray-100);
}

.pagination-info {
    margin: 0 var(--spacing-4);
    color: var(--gray-600);
    font-weight: 500;
    font-size: var(--text-sm);
}

/* ===================================================== */
/* 21. CERTIFICATE STYLES
/* ===================================================== */

.certificate-container {
    background: white;
    border-radius: var(--radius-2xl);
    padding: var(--spacing-8);
    box-shadow: var(--shadow-2xl);
    position: relative;
    overflow: hidden;
    border: 2px solid var(--primary-200);
}

.certificate-container::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, var(--primary-100), transparent 70%);
    border-radius: 50%;
    opacity: 0.3;
    pointer-events: none;
}

.certificate-border {
    border: 10px double var(--primary-500);
    padding: var(--spacing-8);
    border-radius: var(--radius-xl);
    position: relative;
}

.certificate-school-logo {
    width: 100px;
    height: 100px;
    margin: 0 auto var(--spacing-6);
    background: linear-gradient(135deg, var(--primary-500), var(--primary-700));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 48px;
    box-shadow: var(--shadow-2xl);
    animation: float 3s ease-in-out infinite;
}

.certificate-title {
    font-size: 48px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-600), var(--primary-800));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: var(--spacing-6);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.certificate-recipient {
    font-size: var(--text-2xl);
    color: var(--gray-600);
    margin-bottom: var(--spacing-4);
}

.certificate-name {
    font-size: 56px;
    font-weight: 800;
    color: var(--gray-800);
    margin-bottom: var(--spacing-6);
    border-bottom: 3px solid var(--primary-500);
    display: inline-block;
    padding-bottom: var(--spacing-4);
}

.certificate-achievement {
    font-size: 32px;
    font-weight: 600;
    color: var(--primary-600);
    margin: var(--spacing-6) 0;
}

.certificate-footer {
    display: flex;
    justify-content: space-between;
    margin-top: var(--spacing-8);
    padding-top: var(--spacing-8);
    border-top: 2px dashed var(--gray-300);
}

.certificate-signature {
    text-align: center;
}

.certificate-signature-line {
    width: 200px;
    height: 2px;
    background: var(--gray-300);
    margin: var(--spacing-2) 0;
}

.certificate-seal {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    border: 3px solid var(--primary-500);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-500);
    font-size: 40px;
    opacity: 0.5;
}

/* ===================================================== */
/* 22. ID CARD STYLES
/* ===================================================== */

.id-card {
    width: 340px;
    background: linear-gradient(135deg, var(--primary-600), var(--primary-800));
    border-radius: var(--radius-2xl);
    padding: var(--spacing-5);
    color: white;
    box-shadow: var(--shadow-2xl);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.id-card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.3), transparent 70%);
    border-radius: 50%;
    transition: all var(--transition-slow);
    pointer-events: none;
}

.id-card:hover::before {
    transform: scale(1.5);
}

.id-card.staff {
    background: linear-gradient(135deg, var(--secondary-600), var(--secondary-800));
}

.id-card.premium {
    background: linear-gradient(135deg, var(--accent-600), var(--accent-800));
}

.id-card.modern {
    background: linear-gradient(135deg, var(--info-600), var(--info-800));
}

.id-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-4);
}

.id-card-school {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.id-card-logo {
    width: 40px;
    height: 40px;
    background: white;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-600);
    font-size: var(--text-xl);
    box-shadow: var(--shadow-lg);
}

.id-card-type {
    font-size: 10px;
    background: rgba(255, 255, 255, 0.2);
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-full);
    letter-spacing: 0.05em;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.id-card-body {
    display: flex;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-4);
}

.id-card-photo {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid white;
    font-size: 40px;
    box-shadow: var(--shadow-lg);
}

.id-card-details {
    flex: 1;
}

.id-card-name {
    font-weight: 700;
    font-size: 18px;
    margin-bottom: var(--spacing-1);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.id-card-info {
    font-size: 12px;
    opacity: 0.9;
    margin-bottom: var(--spacing-1);
}

.id-card-id {
    font-size: 11px;
    opacity: 0.8;
    font-family: monospace;
    background: rgba(0, 0, 0, 0.2);
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-full);
    display: inline-block;
}

.id-card-footer {
    border-top: 1px solid rgba(255, 255, 255, 0.3);
    padding-top: var(--spacing-3);
    display: flex;
    justify-content: space-between;
    font-size: 11px;
}

.id-card-valid {
    font-weight: 600;
}

.id-card-qr {
    width: 30px;
    height: 30px;
    background: white;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: black;
}

/* ===================================================== */
/* 23. STAFF MANAGEMENT
/* ===================================================== */

.staff-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-5);
    margin-top: var(--spacing-5);
}

.staff-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--spacing-5);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-200);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.staff-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, var(--primary-100), transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
}

.staff-card:hover {
    transform: translateY(-6px) scale(1.02);
    box-shadow: var(--shadow-2xl);
    border-color: var(--primary-400);
}

.staff-card:hover::before {
    opacity: 0.5;
}

.staff-card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-4);
}

.staff-avatar {
    width: 70px;
    height: 70px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--primary-500), var(--primary-700));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 28px;
    font-weight: 600;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-bounce);
}

.staff-card:hover .staff-avatar {
    transform: rotate(360deg) scale(1.1);
}

.staff-name {
    font-weight: 700;
    font-size: 18px;
    color: var(--gray-800);
    margin-bottom: var(--spacing-1);
}

.staff-role {
    font-size: 13px;
    color: var(--gray-500);
    font-weight: 500;
}

.staff-department {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-50), var(--primary-100));
    color: var(--primary-700);
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: 600;
    margin-bottom: var(--spacing-3);
}

.staff-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-3);
    font-size: 12px;
    color: var(--gray-600);
}

.staff-info-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.staff-info-item i {
    width: 16px;
    color: var(--primary-500);
}

/* ===================================================== */
/* 24. RESPONSIVE DESIGN
/* ===================================================== */

@media (max-width: 1400px) {
    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .chart-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 1200px) {
    :root {
        --sidebar-width: 260px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .search-box {
        width: 280px;
    }
}

@media (max-width: 992px) {
    .sidebar {
        transform: translateX(-100%);
        position: fixed;
        z-index: calc(var(--z-fixed) + 10);
    }
    
    .sidebar.mobile-open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0 !important;
    }
    
    .main-content.expanded {
        margin-left: 0 !important;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .filter-bar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-group {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-select {
        width: 100%;
    }
    
    .header-actions .search-box {
        display: none;
    }
    
    .user-info {
        display: none;
    }
    
    .page-title {
        font-size: var(--text-2xl);
    }
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .activity-grid {
        grid-template-columns: 1fr;
    }
    
    .content-wrapper {
        padding: var(--spacing-4);
    }
    
    .btn-group {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .tabs {
        flex-wrap: nowrap;
        overflow-x: auto;
        padding-bottom: var(--spacing-2);
    }
    
    .tab {
        white-space: nowrap;
    }
    
    .modal-content {
        width: 95%;
        margin: var(--spacing-2);
    }
    
    .data-table {
        font-size: var(--text-xs);
    }
    
    .data-table th,
    .data-table td {
        padding: var(--spacing-2);
    }
}

@media (max-width: 576px) {
    :root {
        --header-height: 60px;
    }
    
    .top-header {
        padding: 0 var(--spacing-3);
    }
    
    .page-title {
        font-size: var(--text-xl);
    }
    
    .notification-btn {
        width: 40px;
        height: 40px;
    }
    
    .user-profile {
        padding: var(--spacing-1) var(--spacing-2);
    }
    
    .user-avatar {
        width: 36px;
        height: 36px;
        font-size: var(--text-base);
    }
    
    .stat-card {
        padding: var(--spacing-4);
    }
    
    .stat-value {
        font-size: var(--text-2xl);
    }
    
    .stat-trend {
        position: static;
        margin-top: var(--spacing-2);
    }
    
    .attendance-grid {
        grid-template-columns: 1fr;
    }
    
    .pagination {
        justify-content: center;
    }
    
    .certificate-name {
        font-size: 32px;
    }
    
    .certificate-title {
        font-size: 28px;
    }
}

@media (max-width: 400px) {
    .action-buttons {
        flex-wrap: wrap;
    }
    
    .data-table {
        display: block;
        overflow-x: auto;
    }
    
    .id-card {
        width: 100%;
        max-width: 340px;
    }
}

/* ===================================================== */
/* 25. PRINT STYLES
/* ===================================================== */

@media print {
    @page {
        size: A4;
        margin: 2cm;
    }
    
    .sidebar,
    .top-header,
    .btn,
    .action-buttons,
    .filter-bar,
    .pagination,
    .tabs,
    .modal,
    .toast,
    .notification-btn,
    .user-profile,
    .search-box {
        display: none !important;
    }
    
    .main-content {
        margin: 0 !important;
        padding: 0 !important;
        background: white;
    }
    
    .content-wrapper {
        padding: 0 !important;
    }
    
    .stat-card,
    .chart-card,
    .activity-card,
    .table-container,
    .form-container {
        box-shadow: none !important;
        border: 1px solid #000 !important;
        break-inside: avoid;
    }
    
    .data-table {
        border-collapse: collapse;
    }
    
    .data-table th {
        background: #f0f0f0 !important;
        color: #000 !important;
    }
    
    .data-table td {
        border: 1px solid #ddd;
    }
    
    .certificate-container {
        border: 2px solid #000;
        box-shadow: none;
    }
    
    .id-card {
        box-shadow: none;
        border: 2px solid #000;
        color: #000 !important;
        background: white !important;
    }
    
    .id-card * {
        color: #000 !important;
    }
}

/* ===================================================== */
/* 26. UTILITY CLASSES
/* ===================================================== */

/* Display */
.d-none { display: none; }
.d-block { display: block; }
.d-inline { display: inline; }
.d-inline-block { display: inline-block; }
.d-flex { display: flex; }
.d-inline-flex { display: inline-flex; }
.d-grid { display: grid; }

/* Flex */
.flex-row { flex-direction: row; }
.flex-column { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.flex-nowrap { flex-wrap: nowrap; }
.justify-start { justify-content: flex-start; }
.justify-end { justify-content: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-around { justify-content: space-around; }
.align-start { align-items: flex-start; }
.align-end { align-items: flex-end; }
.align-center { align-items: center; }
.align-stretch { align-items: stretch; }
.flex-1 { flex: 1; }
.flex-auto { flex: auto; }
.flex-none { flex: none; }

/* Grid */
.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
.gap-0 { gap: 0; }
.gap-1 { gap: var(--spacing-1); }
.gap-2 { gap: var(--spacing-2); }
.gap-3 { gap: var(--spacing-3); }
.gap-4 { gap: var(--spacing-4); }
.gap-5 { gap: var(--spacing-5); }
.gap-6 { gap: var(--spacing-6); }

/* Spacing */
.m-0 { margin: 0; }
.m-1 { margin: var(--spacing-1); }
.m-2 { margin: var(--spacing-2); }
.m-3 { margin: var(--spacing-3); }
.m-4 { margin: var(--spacing-4); }
.m-5 { margin: var(--spacing-5); }
.m-6 { margin: var(--spacing-6); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-1); }
.mt-2 { margin-top: var(--spacing-2); }
.mt-3 { margin-top: var(--spacing-3); }
.mt-4 { margin-top: var(--spacing-4); }
.mt-5 { margin-top: var(--spacing-5); }
.mt-6 { margin-top: var(--spacing-6); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-1); }
.mb-2 { margin-bottom: var(--spacing-2); }
.mb-3 { margin-bottom: var(--spacing-3); }
.mb-4 { margin-bottom: var(--spacing-4); }
.mb-5 { margin-bottom: var(--spacing-5); }
.mb-6 { margin-bottom: var(--spacing-6); }

.ml-0 { margin-left: 0; }
.ml-1 { margin-left: var(--spacing-1); }
.ml-2 { margin-left: var(--spacing-2); }
.ml-3 { margin-left: var(--spacing-3); }
.ml-4 { margin-left: var(--spacing-4); }
.ml-5 { margin-left: var(--spacing-5); }
.ml-6 { margin-left: var(--spacing-6); }

.mr-0 { margin-right: 0; }
.mr-1 { margin-right: var(--spacing-1); }
.mr-2 { margin-right: var(--spacing-2); }
.mr-3 { margin-right: var(--spacing-3); }
.mr-4 { margin-right: var(--spacing-4); }
.mr-5 { margin-right: var(--spacing-5); }
.mr-6 { margin-right: var(--spacing-6); }

.mx-0 { margin-left: 0; margin-right: 0; }
.mx-1 { margin-left: var(--spacing-1); margin-right: var(--spacing-1); }
.mx-2 { margin-left: var(--spacing-2); margin-right: var(--spacing-2); }
.mx-3 { margin-left: var(--spacing-3); margin-right: var(--spacing-3); }
.mx-4 { margin-left: var(--spacing-4); margin-right: var(--spacing-4); }
.mx-5 { margin-left: var(--spacing-5); margin-right: var(--spacing-5); }
.mx-6 { margin-left: var(--spacing-6); margin-right: var(--spacing-6); }

.my-0 { margin-top: 0; margin-bottom: 0; }
.my-1 { margin-top: var(--spacing-1); margin-bottom: var(--spacing-1); }
.my-2 { margin-top: var(--spacing-2); margin-bottom: var(--spacing-2); }
.my-3 { margin-top: var(--spacing-3); margin-bottom: var(--spacing-3); }
.my-4 { margin-top: var(--spacing-4); margin-bottom: var(--spacing-4); }
.my-5 { margin-top: var(--spacing-5); margin-bottom: var(--spacing-5); }
.my-6 { margin-top: var(--spacing-6); margin-bottom: var(--spacing-6); }

/* Padding */
.p-0 { padding: 0; }
.p-1 { padding: var(--spacing-1); }
.p-2 { padding: var(--spacing-2); }
.p-3 { padding: var(--spacing-3); }
.p-4 { padding: var(--spacing-4); }
.p-5 { padding: var(--spacing-5); }
.p-6 { padding: var(--spacing-6); }

.pt-0 { padding-top: 0; }
.pt-1 { padding-top: var(--spacing-1); }
.pt-2 { padding-top: var(--spacing-2); }
.pt-3 { padding-top: var(--spacing-3); }
.pt-4 { padding-top: var(--spacing-4); }
.pt-5 { padding-top: var(--spacing-5); }
.pt-6 { padding-top: var(--spacing-6); }

.pb-0 { padding-bottom: 0; }
.pb-1 { padding-bottom: var(--spacing-1); }
.pb-2 { padding-bottom: var(--spacing-2); }
.pb-3 { padding-bottom: var(--spacing-3); }
.pb-4 { padding-bottom: var(--spacing-4); }
.pb-5 { padding-bottom: var(--spacing-5); }
.pb-6 { padding-bottom: var(--spacing-6); }

.pl-0 { padding-left: 0; }
.pl-1 { padding-left: var(--spacing-1); }
.pl-2 { padding-left: var(--spacing-2); }
.pl-3 { padding-left: var(--spacing-3); }
.pl-4 { padding-left: var(--spacing-4); }
.pl-5 { padding-left: var(--spacing-5); }
.pl-6 { padding-left: var(--spacing-6); }

.pr-0 { padding-right: 0; }
.pr-1 { padding-right: var(--spacing-1); }
.pr-2 { padding-right: var(--spacing-2); }
.pr-3 { padding-right: var(--spacing-3); }
.pr-4 { padding-right: var(--spacing-4); }
.pr-5 { padding-right: var(--spacing-5); }
.pr-6 { padding-right: var(--spacing-6); }

.px-0 { padding-left: 0; padding-right: 0; }
.px-1 { padding-left: var(--spacing-1); padding-right: var(--spacing-1); }
.px-2 { padding-left: var(--spacing-2); padding-right: var(--spacing-2); }
.px-3 { padding-left: var(--spacing-3); padding-right: var(--spacing-3); }
.px-4 { padding-left: var(--spacing-4); padding-right: var(--spacing-4); }
.px-5 { padding-left: var(--spacing-5); padding-right: var(--spacing-5); }
.px-6 { padding-left: var(--spacing-6); padding-right: var(--spacing-6); }

.py-0 { padding-top: 0; padding-bottom: 0; }
.py-1 { padding-top: var(--spacing-1); padding-bottom: var(--spacing-1); }
.py-2 { padding-top: var(--spacing-2); padding-bottom: var(--spacing-2); }
.py-3 { padding-top: var(--spacing-3); padding-bottom: var(--spacing-3); }
.py-4 { padding-top: var(--spacing-4); padding-bottom: var(--spacing-4); }
.py-5 { padding-top: var(--spacing-5); padding-bottom: var(--spacing-5); }
.py-6 { padding-top: var(--spacing-6); padding-bottom: var(--spacing-6); }

/* Text Alignment */
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-justify { text-align: justify; }

/* Font Weight */
.font-light { font-weight: 300; }
.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.font-extrabold { font-weight: 800; }

/* Font Size */
.text-xs { font-size: var(--text-xs); }
.text-sm { font-size: var(--text-sm); }
.text-base { font-size: var(--text-base); }
.text-lg { font-size: var(--text-lg); }
.text-xl { font-size: var(--text-xl); }
.text-2xl { font-size: var(--text-2xl); }
.text-3xl { font-size: var(--text-3xl); }
.text-4xl { font-size: var(--text-4xl); }

/* Colors */
.text-primary { color: var(--primary-600); }
.text-secondary { color: var(--secondary-600); }
.text-success { color: var(--success-600); }
.text-danger { color: var(--danger-600); }
.text-warning { color: var(--accent-600); }
.text-info { color: var(--info-600); }
.text-white { color: white; }
.text-black { color: black; }
.text-gray { color: var(--gray-600); }

/* Backgrounds */
.bg-primary { background: var(--primary-600); }
.bg-secondary { background: var(--secondary-600); }
.bg-success { background: var(--success-600); }
.bg-danger { background: var(--danger-600); }
.bg-warning { background: var(--accent-600); }
.bg-info { background: var(--info-600); }
.bg-white { background: white; }
.bg-black { background: black; }
.bg-gray { background: var(--gray-600); }
.bg-transparent { background: transparent; }

/* Borders */
.border-none { border: none; }
.border { border: 1px solid var(--gray-200); }
.border-2 { border: 2px solid var(--gray-200); }
.border-4 { border: 4px solid var(--gray-200); }
.border-primary { border-color: var(--primary-500); }
.border-secondary { border-color: var(--secondary-500); }
.border-success { border-color: var(--success-500); }
.border-danger { border-color: var(--danger-500); }
.border-warning { border-color: var(--accent-500); }

/* Border Radius */
.rounded-none { border-radius: 0; }
.rounded-sm { border-radius: var(--radius-sm); }
.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-2xl { border-radius: var(--radius-2xl); }
.rounded-full { border-radius: var(--radius-full); }

/* Shadows */
.shadow-none { box-shadow: none; }
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }
.shadow-2xl { box-shadow: var(--shadow-2xl); }
.shadow-glow { box-shadow: var(--shadow-glow); }

/* Opacity */
.opacity-0 { opacity: 0; }
.opacity-25 { opacity: 0.25; }
.opacity-50 { opacity: 0.5; }
.opacity-75 { opacity: 0.75; }
.opacity-100 { opacity: 1; }

/* Cursor */
.cursor-pointer { cursor: pointer; }
.cursor-default { cursor: default; }
.cursor-wait { cursor: wait; }
.cursor-not-allowed { cursor: not-allowed; }

/* Overflow */
.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }
.overflow-scroll { overflow: scroll; }
.overflow-visible { overflow: visible; }

/* Position */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }
.static { position: static; }

/* Z-Index */
.z-0 { z-index: 0; }
.z-10 { z-index: 10; }
.z-20 { z-index: 20; }
.z-30 { z-index: 30; }
.z-40 { z-index: 40; }
.z-50 { z-index: 50; }
.z-auto { z-index: auto; }

/* ===================================================== */
/* 27. DARK THEME OVERRIDES
/* ===================================================== */

[data-theme="dark"] {
    background: var(--gray-100);
    color: var(--gray-800);
}

[data-theme="dark"] .stat-card,
[data-theme="dark"] .chart-card,
[data-theme="dark"] .activity-card,
[data-theme="dark"] .form-container,
[data-theme="dark"] .table-container {
    background: var(--gray-200);
    border-color: var(--gray-300);
}

[data-theme="dark"] .stat-value {
    color: var(--gray-800);
}

[data-theme="dark"] .sidebar-link {
    color: var(--gray-600);
}

[data-theme="dark"] .sidebar-link:hover {
    background: var(--gray-300);
}

[data-theme="dark"] .user-name {
    color: var(--gray-800);
}

[data-theme="dark"] .chart-actions button {
    background: var(--gray-200);
    border-color: var(--gray-300);
    color: var(--gray-700);
}

[data-theme="dark"] .chart-actions button:hover {
    background: var(--primary-500);
    color: white;
}

[data-theme="dark"] .search-box {
    background: var(--gray-200);
}

[data-theme="dark"] .search-box input {
    color: var(--gray-800);
}

[data-theme="dark"] .notification-btn {
    background: var(--gray-200);
}

[data-theme="dark"] .user-profile {
    background: var(--gray-200);
}

[data-theme="dark"] .user-profile:hover {
    background: var(--gray-300);
}

[data-theme="dark"] .data-table th {
    background: var(--gray-200);
    color: var(--gray-700);
}

[data-theme="dark"] .data-table td {
    color: var(--gray-700);
    border-bottom-color: var(--gray-300);
}

[data-theme="dark"] .data-table tbody tr:hover {
    background: var(--gray-300);
}

[data-theme="dark"] .filter-bar {
    background: var(--gray-200);
    border-color: var(--gray-300);
}

[data-theme="dark"] .filter-select {
    background: var(--gray-100);
    color: var(--gray-800);
    border-color: var(--gray-300);
}

[data-theme="dark"] .attendance-card {
    background: var(--gray-200);
    border-color: var(--gray-300);
}

[data-theme="dark"] .student-name {
    color: var(--gray-800);
}

[data-theme="dark"] .staff-card {
    background: var(--gray-200);
    border-color: var(--gray-300);
}

[data-theme="dark"] .staff-name {
    color: var(--gray-800);
}

[data-theme="dark"] .modal-content {
    background: var(--gray-200);
}

[data-theme="dark"] .modal-header,
[data-theme="dark"] .modal-footer {
    border-color: var(--gray-300);
}

[data-theme="dark"] .modal-title {
    color: var(--gray-800);
}

[data-theme="dark"] .modal-close {
    background: var(--gray-300);
    color: var(--gray-700);
}

[data-theme="dark"] .btn-outline {
    border-color: var(--gray-300);
    color: var(--gray-700);
}

[data-theme="dark"] .btn-outline:hover {
    border-color: var(--primary-500);
    color: var(--primary-500);
    background: var(--primary-50);
}

[data-theme="dark"] .form-control {
    background: var(--gray-100);
    border-color: var(--gray-300);
    color: var(--gray-800);
}

[data-theme="dark"] .form-label {
    color: var(--gray-700);
}

[data-theme="dark"] .file-upload {
    background: var(--gray-200);
    border-color: var(--gray-300);
}

[data-theme="dark"] .toast {
    background: var(--gray-200);
    border-color: var(--gray-300);
}

[data-theme="dark"] .toast-title {
    color: var(--gray-800);
}

[data-theme="dark"] .toast-message {
    color: var(--gray-700);
}

/* ===================================================== */
/* 28. ADVANCED EFFECTS
/* ===================================================== */

/* Glass Morphism */
.glass {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .glass {
    background: rgba(31, 41, 55, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Neumorphism */
.neumorph {
    background: #e0e0e0;
    box-shadow: 20px 20px 60px #bebebe,
                -20px -20px 60px #ffffff;
}

[data-theme="dark"] .neumorph {
    background: #2d3748;
    box-shadow: 20px 20px 60px #1e293b,
                -20px -20px 60px #3c4a5f;
}

/* Gradient Borders */
.gradient-border {
    border: 2px solid transparent;
    background: linear-gradient(var(--gray-50), var(--gray-50)) padding-box,
                linear-gradient(135deg, var(--primary-500), var(--primary-600)) border-box;
}

[data-theme="dark"] .gradient-border {
    background: linear-gradient(var(--gray-200), var(--gray-200)) padding-box,
                linear-gradient(135deg, var(--primary-500), var(--primary-600)) border-box;
}

/* Holographic Effect */
.holographic {
    position: relative;
    overflow: hidden;
}

.holographic::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: conic-gradient(
        from 0deg,
        transparent,
        rgba(255, 255, 255, 0.1),
        transparent,
        rgba(255, 255, 255, 0.1),
        transparent
    );
    animation: rotate 10s linear infinite;
    pointer-events: none;
}

/* Particle Background */
.particles {
    position: relative;
    overflow: hidden;
}

.particles::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: radial-gradient(circle at 30% 40%, rgba(99, 102, 241, 0.1) 0%, transparent 20%),
                      radial-gradient(circle at 70% 60%, rgba(16, 185, 129, 0.1) 0%, transparent 20%),
                      radial-gradient(circle at 40% 80%, rgba(245, 158, 11, 0.1) 0%, transparent 20%);
    pointer-events: none;
}

/* ===================================================== */
/* 29. MICRO-INTERACTIONS
/* ===================================================== */

/* Ripple Effect */
.ripple {
    position: relative;
    overflow: hidden;
}

.ripple::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: translate(-50%, -50%);
    transition: width 0.3s, height 0.3s;
    pointer-events: none;
}

.ripple:active::after {
    width: 200px;
    height: 200px;
}

/* Hover Glow */
.hover-glow {
    transition: box-shadow var(--transition-fast);
}

.hover-glow:hover {
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.5);
}

/* Scale on Click */
.click-scale:active {
    transform: scale(0.95);
}

/* Smooth Transitions */
.smooth-transition {
    transition: all var(--transition-base);
}

/* Loading Bar */
.loading-bar {
    position: relative;
    overflow: hidden;
}

.loading-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-500), var(--primary-600));
    transform: translateX(-100%);
    animation: loadingBar 2s infinite;
}

@keyframes loadingBar {
    0% {
        transform: translateX(-100%);
    }
    50% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(100%);
    }
}

/* ===================================================== */
/* 30. PERFORMANCE OPTIMIZATIONS
/* ===================================================== */

/* Reduce Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Optimize Rendering */
.will-change-transform {
    will-change: transform;
}

.will-change-opacity {
    will-change: opacity;
}

/* Hardware Acceleration */
.accelerate {
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
}

/* Image Rendering */
img {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

/* Font Smoothing */
.font-smooth {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===================================================== */
/* END OF STYLES
/* ===================================================== */