/* Eshraf Educational Supervision System - Professional Modern Design */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Cairo:wght@300;400;500;600;700;800&display=swap');

:root {
    /* Modern Professional Color Palette */
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;
    --primary-300: #93c5fd;
    --primary-400: #60a5fa;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --primary-800: #1e40af;
    --primary-900: #1e3a8a;

    /* Neutral Colors */
    --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;

    /* Semantic Colors */
    --success-50: #ecfdf5;
    --success-500: #10b981;
    --success-600: #059669;

    --warning-50: #fffbeb;
    --warning-500: #f59e0b;
    --warning-600: #d97706;

    --error-50: #fef2f2;
    --error-500: #ef4444;
    --error-600: #dc2626;

    /* Background & Surface */
    --background: #ffffff;
    --surface: #ffffff;
    --surface-hover: var(--gray-50);
    --border: var(--gray-200);
    --border-hover: var(--gray-300);

    /* Text Colors */
    --text-primary: var(--gray-900);
    --text-secondary: var(--gray-600);
    --text-tertiary: var(--gray-500);
    --text-inverse: #ffffff;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-arabic: 'Cairo', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    /* Legacy color variables for backward compatibility */
    --primary-color: var(--primary-500);
    --primary-light: var(--primary-50);
    --primary-dark: var(--primary-700);
    --secondary-color: var(--surface);
    --success-color: var(--success-500);
    --warning-color: var(--warning-500);
    --error-color: var(--error-500);
    --text-dark: var(--text-primary);
    --text-light: var(--text-secondary);
    --border-color: var(--border);
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    background: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* RTL Support */
body.rtl {
    direction: rtl;
    text-align: right;
    font-family: var(--font-arabic);
}

body.rtl *:not(i):not(.fa):not(.fas):not(.far):not(.fal):not(.fab) {
    font-family: var(--font-arabic);
}

/* Typography Scale */
.text-xs { font-size: 0.75rem; line-height: 1rem; }
.text-sm { font-size: 0.875rem; line-height: 1.25rem; }
.text-base { font-size: 1rem; line-height: 1.5rem; }
.text-lg { font-size: 1.125rem; line-height: 1.75rem; }
.text-xl { font-size: 1.25rem; line-height: 1.75rem; }
.text-2xl { font-size: 1.5rem; line-height: 2rem; }
.text-3xl { font-size: 1.875rem; line-height: 2.25rem; }
.text-4xl { font-size: 2.25rem; line-height: 2.5rem; }
.text-5xl { font-size: 3rem; line-height: 1; }
.text-6xl { font-size: 3.75rem; line-height: 1; }

.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; }

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.container-fluid {
    max-width: 100%;
    padding: 0 var(--space-6);
}

/* Flexbox Utilities */
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-start { justify-content: flex-start; }
.justify-end { justify-content: flex-end; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.flex-1 { flex: 1; }

/* Grid System */
.grid { display: 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); }
.grid-cols-12 { grid-template-columns: repeat(12, 1fr); }

.grid-2 { grid-template-columns: repeat(2, 1fr); }

.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* Spacing */
.p-0 { padding: 0; }
.p-2 { padding: var(--space-2); }
.p-3 { padding: var(--space-3); }
.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }
.p-8 { padding: var(--space-8); }

.px-2 { padding-left: var(--space-2); padding-right: var(--space-2); }
.px-3 { padding-left: var(--space-3); padding-right: var(--space-3); }
.px-4 { padding-left: var(--space-4); padding-right: var(--space-4); }
.px-6 { padding-left: var(--space-6); padding-right: var(--space-6); }

.py-2 { padding-top: var(--space-2); padding-bottom: var(--space-2); }
.py-3 { padding-top: var(--space-3); padding-bottom: var(--space-3); }
.py-4 { padding-top: var(--space-4); padding-bottom: var(--space-4); }
.py-6 { padding-top: var(--space-6); padding-bottom: var(--space-6); }
.py-8 { padding-top: var(--space-8); padding-bottom: var(--space-8); }
.py-12 { padding-top: var(--space-12); padding-bottom: var(--space-12); }
.py-16 { padding-top: var(--space-16); padding-bottom: var(--space-16); }
.py-20 { padding-top: var(--space-20); padding-bottom: var(--space-20); }

.m-0 { margin: 0; }
.m-2 { margin: var(--space-2); }
.m-4 { margin: var(--space-4); }
.m-6 { margin: var(--space-6); }

.mx-auto { margin-left: auto; margin-right: auto; }
.my-2 { margin-top: var(--space-2); margin-bottom: var(--space-2); }
.my-4 { margin-top: var(--space-4); margin-bottom: var(--space-4); }
.my-6 { margin-top: var(--space-6); margin-bottom: var(--space-6); }
.my-8 { margin-top: var(--space-8); margin-bottom: var(--space-8); }

.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }

/* Width & Height */
.w-full { width: 100%; }
.w-auto { width: auto; }
.h-full { height: 100%; }
.h-screen { height: 100vh; }
.min-h-screen { min-height: 100vh; }

/* Header */
.header {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 50;
    transition: all 0.3s ease;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-4) 0;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-600);
    text-decoration: none;
    transition: color 0.3s ease;
}

.logo:hover {
    color: var(--primary-700);
}

.logo i {
    margin-right: var(--space-2);
    font-size: 2rem;
    background: linear-gradient(135deg, var(--primary-500), var(--primary-700));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

body.rtl .logo i {
    margin-right: 0;
    margin-left: var(--space-2);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--space-8);
    margin: 0;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius);
    transition: all 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: var(--primary-600);
    background: var(--primary-50);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 0.95rem;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    color: var(--text-inverse);
    box-shadow: var(--shadow);
}

.btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--surface);
    color: var(--primary-600);
    border-color: var(--primary-200);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--primary-50);
    border-color: var(--primary-300);
}

.btn-outline {
    background: transparent;
    color: var(--primary-600);
    border-color: var(--primary-300);
}

.btn-outline:hover:not(:disabled) {
    background: var(--primary-600);
    color: var(--text-inverse);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: none;
}

.btn-ghost:hover:not(:disabled) {
    background: var(--surface-hover);
    color: var(--text-primary);
}

.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: 0.875rem;
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: 1.125rem;
}

.btn-success {
    background: linear-gradient(135deg, var(--success-500), var(--success-600));
    color: var(--text-inverse);
    box-shadow: var(--shadow);
}

.btn-success:hover:not(:disabled) {
    background: linear-gradient(135deg, #059669, #047857);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-500), var(--warning-600));
    color: var(--text-inverse);
    box-shadow: var(--shadow);
}

.btn-warning:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--warning-600), #b45309);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-danger {
    background: linear-gradient(135deg, var(--error-500), var(--error-600));
    color: var(--text-inverse);
    box-shadow: var(--shadow);
}

.btn-danger:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--error-600), #b91c1c);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

/* Forms */
.form-group {
    margin-bottom: var(--space-6);
}

.form-label {
    display: block;
    margin-bottom: var(--space-2);
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 1rem;
    color: var(--text-primary);
    background: var(--surface);
    transition: all 0.3s ease;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px var(--primary-100);
}

.form-input::placeholder {
    color: var(--text-tertiary);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-error {
    margin-top: var(--space-1);
    font-size: 0.875rem;
    color: var(--error-500);
}

/* Cards */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.card-header {
    padding: var(--space-6);
    border-bottom: 1px solid var(--border);
    background: var(--gray-50);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.card-body {
    padding: var(--space-6);
}

.card-footer {
    padding: var(--space-4) var(--space-6);
    background: var(--gray-50);
    border-top: 1px solid var(--border);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-800) 100%);
    color: var(--text-inverse);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: var(--space-6);
    line-height: 1.1;
    background: linear-gradient(135deg, #ffffff, #e0e7ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: var(--space-8);
    opacity: 0.9;
    font-weight: 400;
}

/* Feature Cards */
.feature-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    text-align: center;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-500), var(--primary-600));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-200);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-6);
    background: linear-gradient(135deg, var(--primary-100), var(--primary-200));
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--primary-600);
    transition: all 0.3s ease;
}

.feature-card:hover .feature-icon {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    color: var(--text-inverse);
    transform: scale(1.1);
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--space-4);
    color: var(--text-primary);
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-6);
}

.feature-list {
    list-style: none;
    padding: 0;
    text-align: right;
}

body:not(.rtl) .feature-list {
    text-align: left;
}

.feature-list li {
    padding: var(--space-2) 0;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--gray-100);
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.feature-list li:last-child {
    border-bottom: none;
}

.feature-list i {
    color: var(--success-500);
    font-size: 0.875rem;
}

/* Process Steps */
.process-step {
    text-align: center;
    position: relative;
}

.process-number {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-6);
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-inverse);
    box-shadow: var(--shadow-lg);
    position: relative;
    z-index: 1;
}

.process-step::after {
    content: '';
    position: absolute;
    top: 40px;
    left: calc(100% - 40px);
    width: calc(100% - 80px);
    height: 2px;
    background: linear-gradient(90deg, var(--primary-300), var(--primary-400));
    z-index: 0;
}

.process-step:last-child::after {
    display: none;
}

body.rtl .process-step::after {
    left: 40px;
    right: calc(100% - 40px);
    background: linear-gradient(-90deg, var(--primary-300), var(--primary-400));
}

.process-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-3);
    color: var(--text-primary);
}

.process-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Authentication Pages */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-50) 0%, var(--primary-100) 100%);
    position: relative;
    overflow: hidden;
}

.auth-container::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, var(--primary-200) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.3;
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    50% { transform: translate(-20px, -20px) rotate(180deg); }
}

.auth-card {
    background: var(--surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: var(--space-8);
    width: 100%;
    max-width: 400px;
    position: relative;
    z-index: 1;
    border: 1px solid var(--border);
}

.auth-header {
    text-align: center;
    margin-bottom: var(--space-8);
}

.auth-logo {
    font-size: 3rem;
    background: linear-gradient(135deg, var(--primary-500), var(--primary-700));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-4);
}

.auth-title {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.auth-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* Language Toggle */
.language-toggle {
    display: inline-flex;
    background: var(--gray-100);
    border-radius: var(--radius-lg);
    padding: var(--space-1);
    box-shadow: var(--shadow-sm);
}

.lang-btn {
    padding: var(--space-2) var(--space-4);
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.875rem;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.3s ease;
}

.lang-btn:hover {
    background: var(--primary-100);
    color: var(--primary-600);
}

.lang-btn.active {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    color: var(--text-inverse);
    box-shadow: var(--shadow-sm);
}

/* Alerts */
.alert {
    padding: var(--space-4);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-4);
    border-left: 4px solid;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--space-3);
    opacity: 0;
    transition: opacity 0.3s ease;
}

body.rtl .alert {
    border-left: none;
    border-right: 4px solid;
}

.alert-success {
    background: var(--success-50);
    border-color: var(--success-500);
    color: var(--success-600);
}

.alert-warning {
    background: var(--warning-50);
    border-color: var(--warning-500);
    color: var(--warning-600);
}

.alert-error {
    background: var(--error-50);
    border-color: var(--error-500);
    color: var(--error-600);
}

/* Tables */
.table-container {
    background: var(--surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th {
    background: var(--gray-50);
    padding: var(--space-4);
    text-align: right;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border);
    font-size: 0.95rem;
}

body:not(.rtl) .table th {
    text-align: left;
}

.table td {
    padding: var(--space-4);
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
}

.table tbody tr:hover {
    background: var(--surface-hover);
}

.table tbody tr:last-child td {
    border-bottom: none;
}

/* Status Badges */
.status-badge {
    display: inline-block;
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius);
    font-size: 0.813rem;
    font-weight: 600;
    text-transform: capitalize;
}

.status-active {
    background: var(--success-50);
    color: var(--success-600);
    border: 1px solid var(--success-500);
}

.status-inactive {
    background: var(--gray-100);
    color: var(--gray-600);
    border: 1px solid var(--gray-400);
}

.gender-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius);
    font-size: 0.813rem;
    font-weight: 600;
}

.gender-male {
    background: var(--primary-50);
    color: var(--primary-600);
    border: 1px solid var(--primary-200);
}

.gender-female {
    background: #fdf2f8;
    color: #ec4899;
    border: 1px solid #fbcfe8;
}

.section-badge {
    display: inline-block;
    padding: 0.25rem 0.65rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--primary-100);
    color: var(--primary-700);
    border: 1px solid var(--primary-200);
    margin: 0.125rem;
}

.subject-badge {
    display: inline-block;
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius);
    font-size: 0.813rem;
    font-weight: 500;
    background: var(--gray-100);
    color: var(--gray-700);
}

.grade-badge {
    display: inline-block;
    padding: 0.25rem 0.65rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
    background: var(--gray-100);
    color: var(--gray-700);
    margin: 0.125rem;
}

/* Footer */
.footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: var(--space-16) 0 var(--space-8);
    margin-top: var(--space-20);
}

.footer-content {
    text-align: center;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-inverse);
    margin-bottom: var(--space-4);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
}

.footer-logo i {
    font-size: 2rem;
    background: linear-gradient(135deg, var(--primary-400), var(--primary-600));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Dashboard Styles */
.sidebar {
    position: fixed;
    top: 0;
    right: 0;
    width: 280px;
    height: 100vh;
    background: var(--surface);
    border-left: 1px solid var(--border);
    z-index: 100;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

body:not(.rtl) .sidebar {
    right: auto;
    left: 0;
    border-left: none;
    border-right: 1px solid var(--border);
}

.main-content {
    margin-right: 280px;
    min-height: 100vh;
    background: var(--gray-50);
}

body:not(.rtl) .main-content {
    margin-right: 0;
    margin-left: 280px;
}

.sidebar-header {
    padding: var(--space-6);
    border-bottom: 1px solid var(--border);
    background: var(--primary-50);
}

.sidebar-menu {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-item {
    border-bottom: 1px solid var(--border);
}

.sidebar-link {
    display: flex;
    align-items: center;
    padding: var(--space-4) var(--space-6);
    text-decoration: none;
    color: var(--text-secondary);
    transition: all 0.3s ease;
    font-weight: 500;
}

.sidebar-link:hover,
.sidebar-link.active {
    background: var(--primary-50);
    color: var(--primary-600);
}

.sidebar-link i {
    margin-left: var(--space-3);
    width: 20px;
    text-align: center;
}

body:not(.rtl) .sidebar-link i {
    margin-left: 0;
    margin-right: var(--space-3);
}

.content-section {
    display: none;
    padding: var(--space-8);
}

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

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-8);
    padding-bottom: var(--space-6);
    border-bottom: 1px solid var(--border);
}

.dashboard-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-6);
    margin-bottom: var(--space-8);
}

.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.stat-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-600);
    margin-bottom: var(--space-2);
}

.stat-label {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
}

/* Mobile Menu */
.mobile-menu-btn {
    display: none;
    position: fixed;
    top: var(--space-4);
    right: var(--space-4);
    z-index: 101;
    background: var(--primary-600);
    color: var(--text-inverse);
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
}

body:not(.rtl) .mobile-menu-btn {
    right: auto;
    left: var(--space-4);
}

.mobile-menu-btn:hover {
    background: var(--primary-700);
    transform: scale(1.1);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 3rem;
    }

    .container {
        padding: 0 var(--space-4);
    }
}

@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: var(--space-4);
        padding: var(--space-6) 0;
    }

    .nav-menu {
        gap: var(--space-4);
        flex-wrap: wrap;
        justify-content: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.25rem;
    }

    .grid-cols-3 {
        grid-template-columns: 1fr;
    }

    .grid-cols-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .grid-2 {
        grid-template-columns: 1fr;
    }

    .auth-card {
        margin: var(--space-4);
        padding: var(--space-6);
    }

    .feature-card {
        padding: var(--space-6);
    }

    .process-step::after {
        display: none;
    }

    /* Dashboard Mobile */
    .sidebar {
        transform: translateX(100%);
        transition: transform 0.3s ease;
    }

    body:not(.rtl) .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-right: 0;
        margin-left: 0;
    }

    .mobile-menu-btn {
        display: block;
    }

    .dashboard-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-4);
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.125rem;
    }

    .grid-cols-4 {
        grid-template-columns: 1fr;
    }

    .btn {
        width: 100%;
    }

    .nav-actions {
        flex-direction: column;
        gap: var(--space-3);
    }
}

/* Utility Classes */
.hidden { display: none; }
.block { display: block; }
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-tertiary { color: var(--text-tertiary); }
.text-inverse { color: var(--text-inverse); }

.bg-primary { background-color: var(--primary-500); }
.bg-surface { background-color: var(--surface); }
.bg-gray-50 { background-color: var(--gray-50); }

.border { border: 1px solid var(--border); }
.border-0 { border: none; }
.rounded { border-radius: var(--radius); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }

.shadow { box-shadow: var(--shadow); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }

.opacity-50 { opacity: 0.5; }
.opacity-75 { opacity: 0.75; }

.transition { transition: all 0.3s ease; }

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

.animate-spin {
    animation: spin 1s linear infinite;
}

/* Smooth Animations */
.fade-in {
    animation: fadeIn 0.6s ease-out;
}

.slide-up {
    animation: slideUp 0.6s ease-out;
}

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

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

/* ========================================
   MODAL STYLES
   ======================================== */

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(17, 24, 39, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 9999;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    animation: fadeIn 0.2s ease-out;
}

.modal-content {
    background: var(--surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border);
    max-width: 650px;
    width: 100%;
    max-height: 92vh;
    overflow: hidden;
    animation: modalSlideIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
    pointer-events: auto;
    z-index: 10000;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-6) var(--space-6) var(--space-5);
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
    border-bottom: none;
    position: relative;
    overflow: hidden;
}

.modal-header::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 1;
    pointer-events: none;
}

.modal-header h2 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-inverse);
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    z-index: 1;
    position: relative;
}

.modal-close {
    background: rgba(255, 255, 255, 0.15);
    border: 2px solid rgba(255, 255, 255, 0.2);
    font-size: 1.25rem;
    color: var(--text-inverse);
    cursor: pointer;
    padding: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius);
    transition: all 0.2s ease;
    font-weight: 400;
    line-height: 1;
    z-index: 1;
    position: relative;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.35);
    transform: scale(1.05);
}

.modal-close:active {
    transform: scale(0.98);
}

.modal-body {
    padding: var(--space-6);
    background: var(--surface);
    overflow-y: auto;
    max-height: calc(92vh - 180px);
}

.modal-body::-webkit-scrollbar {
    width: 8px;
}

.modal-body::-webkit-scrollbar-track {
    background: var(--gray-100);
    border-radius: var(--radius);
}

.modal-body::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: var(--radius);
}

.modal-body::-webkit-scrollbar-thumb:hover {
    background: var(--gray-400);
}

.modal-body .form-group {
    margin-bottom: var(--space-5);
}

.modal-body .form-label {
    display: block;
    margin-bottom: var(--space-2);
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.modal-body .form-input,
.modal-body .form-select,
.modal-body .form-textarea {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: all 0.2s ease;
    background: var(--surface);
    color: var(--text-primary);
    font-family: inherit;
}

.modal-body .form-input:hover,
.modal-body .form-select:hover,
.modal-body .form-textarea:hover {
    border-color: var(--border-hover);
}

.modal-body .form-input:focus,
.modal-body .form-select:focus,
.modal-body .form-textarea:focus {
    outline: none;
    border-color: var(--primary-500);
    background: var(--surface);
    box-shadow: 0 0 0 4px var(--primary-100);
}

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

.modal-body .form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: left 12px center;
    padding-left: 40px;
}

body:not(.rtl) .modal-body .form-select {
    background-position: right 12px center;
    padding-left: var(--space-4);
    padding-right: 40px;
}

.modal-footer {
    display: flex;
    gap: var(--space-3);
    padding: var(--space-5) var(--space-6) var(--space-6);
    background: var(--gray-50);
    border-top: 1px solid var(--border);
    justify-content: flex-end;
}

.modal-footer .btn {
    padding: var(--space-3) var(--space-6);
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    min-width: 100px;
}

.modal-footer .btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.modal-footer .btn-primary {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    color: var(--text-inverse);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
}

.modal-footer .btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
}

.modal-footer .btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

.modal-footer .btn-secondary {
    background: var(--surface);
    color: var(--text-secondary);
    border: 2px solid var(--border);
}

.modal-footer .btn-secondary:hover:not(:disabled) {
    background: var(--gray-100);
    color: var(--text-primary);
    border-color: var(--border-hover);
}

.modal-footer .btn-secondary:active:not(:disabled) {
    transform: scale(0.98);
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px) scale(0.96);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* RTL Modal Adjustments */
body.rtl .modal-header {
    flex-direction: row-reverse;
}

body.rtl .modal-footer {
    flex-direction: row-reverse;
}

@media (max-width: 768px) {
    .modal {
        padding: var(--space-3);
    }

    .modal-content {
        max-width: 100%;
        max-height: 95vh;
        border-radius: var(--radius-lg);
    }

    .modal-header {
        padding: var(--space-5) var(--space-5) var(--space-4);
    }

    .modal-header h2 {
        font-size: 1.25rem;
    }

    .modal-close {
        width: 36px;
        height: 36px;
        font-size: 1.125rem;
    }

    .modal-body {
        padding: var(--space-5);
        max-height: calc(95vh - 180px);
    }

    .modal-footer {
        padding: var(--space-4) var(--space-5) var(--space-5);
        flex-direction: column-reverse;
    }

    .modal-footer .btn {
        width: 100%;
        padding: var(--space-3) var(--space-4);
        font-size: 0.875rem;
    }
}