/* =============================================
   AL-ANSAAR SCHOOLS - MAIN STYLESHEET
   Modern, Elegant & Professional Design
   ============================================= */

/* =============================================
   CSS CUSTOM PROPERTIES (VARIABLES)
   ============================================= */
:root {
    /* Primary Colors - Elegant Navy & Gold */
    --primary: #0D3B4C;
    --primary-dark: #082530;
    --primary-light: #145566;
    --primary-rgb: 13, 59, 76;
    
    /* Accent Colors - Luxurious Gold */
    --accent: #C9A227;
    --accent-light: #E0BF4A;
    --accent-dark: #A88A1F;
    --accent-rgb: 201, 162, 39;
    
    /* Neutral Colors */
    --white: #FFFFFF;
    --off-white: #FAFBFC;
    --gray-50: #F8FAFB;
    --gray-100: #F1F5F9;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E1;
    --gray-400: #94A3B8;
    --gray-500: #64748B;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1E293B;
    --gray-900: #0F172A;
    
    /* Semantic Colors */
    --success: #059669;
    --warning: #D97706;
    --error: #DC2626;
    --info: #0284C7;
    
    /* Typography */
    --font-display: 'Playfair Display', Georgia, 'Times New Roman', serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* 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 */
    --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;
    --space-24: 6rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --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);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
    --transition-bounce: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Z-Index Scale */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-popover: 600;
    --z-tooltip: 700;
}

/* =============================================
   RESET & BASE STYLES
   ============================================= */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.7;
    color: var(--gray-700);
    background-color: var(--white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Selection */
::selection {
    background-color: var(--accent);
    color: var(--white);
}

/* Focus Styles */
:focus {
    outline: none;
}

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* Images */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Links */
a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

/* Lists */
ul, ol {
    list-style: none;
}

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

/* =============================================
   TYPOGRAPHY
   ============================================= */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    color: var(--primary);
    margin-bottom: var(--space-4);
}

h1 { font-size: clamp(var(--text-3xl), 5vw, var(--text-6xl)); }
h2 { font-size: clamp(var(--text-2xl), 4vw, var(--text-5xl)); }
h3 { font-size: clamp(var(--text-xl), 3vw, var(--text-4xl)); }
h4 { font-size: clamp(var(--text-lg), 2vw, var(--text-2xl)); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

p {
    margin-bottom: var(--space-4);
}

.text-accent { color: var(--accent); }
.text-primary { color: var(--primary); }
.text-white { color: var(--white); }
.text-muted { color: var(--gray-500); }

/* =============================================
   LAYOUT
   ============================================= */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.section {
    padding: var(--space-20) 0;
}

.section-sm {
    padding: var(--space-12) 0;
}

/* =============================================
   SECTION HEADER
   ============================================= */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-16);
}

.section-subtitle {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--accent);
    margin-bottom: var(--space-4);
}

.section-subtitle::before,
.section-subtitle::after {
    content: '';
    width: 30px;
    height: 1px;
    background: var(--accent);
}

.section-title {
    margin-bottom: var(--space-6);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--accent), var(--accent-light));
    margin: var(--space-6) auto 0;
    border-radius: var(--radius-full);
}

.section-desc {
    font-size: var(--text-lg);
    color: var(--gray-500);
    line-height: 1.8;
}

/* =============================================
   BUTTONS
   ============================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: var(--white);
    box-shadow: 0 4px 20px rgba(var(--accent-rgb), 0.35);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(var(--accent-rgb), 0.45);
}

.btn-secondary {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}

.btn-secondary:hover {
    background: var(--primary);
    color: var(--white);
}

.btn-outline-white {
    background: transparent;
    color: var(--white);
    border-color: var(--white);
}

.btn-outline-white:hover {
    background: var(--white);
    color: var(--primary);
}

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

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

/* =============================================
   PRELOADER
   ============================================= */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.preloader-inner {
    text-align: center;
}

.preloader-icon {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-4);
    animation: pulse 1.5s ease-in-out infinite;
}

.preloader-icon i {
    font-size: var(--text-4xl);
    color: var(--accent);
}

.preloader-text {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--white);
    margin-bottom: var(--space-6);
}

.preloader-bar {
    width: 200px;
    height: 4px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin: 0 auto;
}

.preloader-bar span {
    display: block;
    height: 100%;
    background: var(--accent);
    animation: loading 1.2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.8; }
}

@keyframes loading {
    0% { width: 0; margin-left: 0; }
    50% { width: 100%; margin-left: 0; }
    100% { width: 0; margin-left: 100%; }
}

/* =============================================
   TOP BAR
   ============================================= */
.top-bar {
    background: var(--primary-dark);
    padding: var(--space-2) 0;
    font-size: var(--text-sm);
}

.top-bar-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.top-bar-left {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.top-bar-left a {
    color: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    transition: color var(--transition-fast);
}

.top-bar-left a:hover {
    color: var(--accent);
}

.top-bar-left i {
    color: var(--accent);
    font-size: var(--text-xs);
}

.social-links {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.social-links a {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--text-xs);
    transition: all var(--transition-fast);
}

.social-links a:hover {
    background: var(--accent);
    color: var(--white);
    transform: translateY(-2px);
}

/* =============================================
   HEADER & NAVIGATION
   ============================================= */
.header {
    background: var(--white);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.header.scrolled {
    box-shadow: var(--shadow-lg);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 90px;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.logo-img {
    height: 60px;
    width: auto;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-main {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--primary);
    line-height: 1.1;
    letter-spacing: 0.5px;
}

.logo-sub {
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 3px;
}

/* Navigation Menu */
.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--gray-600);
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 3px;
    background: var(--accent);
    transition: all var(--transition-base);
    transform: translateX(-50%);
    border-radius: var(--radius-full);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: calc(100% - var(--space-8));
}

.nav-link i {
    font-size: 10px;
    transition: transform var(--transition-fast);
}

/* Dropdown */
.has-dropdown:hover .nav-link i {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-base);
    padding: var(--space-3) 0;
    z-index: var(--z-dropdown);
    border: 1px solid var(--gray-100);
}

.has-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-link {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    font-size: var(--text-sm);
    color: var(--gray-600);
    transition: all var(--transition-fast);
}

.dropdown-link:hover {
    background: var(--gray-50);
    color: var(--primary);
    padding-left: var(--space-6);
}

/* Nav CTA */
.nav-cta .btn {
    margin-left: var(--space-4);
}

/* Mobile Navigation Toggle */
.nav-toggle {
    display: none;
    width: 30px;
    height: 24px;
    position: relative;
    z-index: 1001;
}

.hamburger,
.hamburger::before,
.hamburger::after {
    width: 100%;
    height: 3px;
    background: var(--primary);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    position: absolute;
    left: 0;
}

.hamburger {
    top: 50%;
    transform: translateY(-50%);
}

.hamburger::before {
    content: '';
    top: -8px;
}

.hamburger::after {
    content: '';
    bottom: -8px;
}

.nav-toggle.active .hamburger {
    background: transparent;
}

.nav-toggle.active .hamburger::before {
    transform: rotate(45deg);
    top: 0;
}

.nav-toggle.active .hamburger::after {
    transform: rotate(-45deg);
    bottom: 0;
}

/* Mobile Overlay */
.mobile-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: var(--z-modal-backdrop);
}

.mobile-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* =============================================
   PAGE HERO
   ============================================= */
.page-hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    padding: var(--space-20) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 1;
}

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

.page-hero h1 {
    color: var(--white);
    margin-bottom: var(--space-4);
}

.breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--text-sm);
}

.breadcrumb a {
    color: var(--accent);
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb i {
    font-size: 8px;
    color: rgba(255, 255, 255, 0.5);
}

/* =============================================
   CARDS
   ============================================= */
.card {
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

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

.card-img-wrapper {
    overflow: hidden;
    position: relative;
}

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

.card-title {
    font-size: var(--text-xl);
    margin-bottom: var(--space-3);
}

.card-text {
    color: var(--gray-500);
    font-size: var(--text-sm);
    margin-bottom: var(--space-4);
}

/* =============================================
   FORMS
   ============================================= */
.form-group {
    margin-bottom: var(--space-5);
}

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

.form-control {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-family: var(--font-body);
    font-size: var(--text-base);
    color: var(--gray-700);
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.form-control:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.15);
}

.form-control::placeholder {
    color: var(--gray-400);
}

textarea.form-control {
    min-height: 150px;
    resize: vertical;
}

select.form-control {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%2364748B' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-4) center;
    padding-right: var(--space-10);
}

/* =============================================
   ALERTS
   ============================================= */
.alert {
    padding: var(--space-4) var(--space-5);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-5);
    font-size: var(--text-sm);
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.alert-success {
    background: #D1FAE5;
    color: #065F46;
    border: 1px solid #A7F3D0;
}

.alert-danger {
    background: #FEE2E2;
    color: #991B1B;
    border: 1px solid #FECACA;
}

.alert-info {
    background: #DBEAFE;
    color: #1E40AF;
    border: 1px solid #BFDBFE;
}

/* =============================================
   FOOTER
   ============================================= */
.footer {
    background: var(--primary-dark);
    color: rgba(255, 255, 255, 0.8);
}

.footer-main {
    padding: var(--space-20) 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.8fr 1fr 1fr 1.3fr;
    gap: var(--space-10);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-5);
}

.footer-logo img {
    height: 50px;
}

.footer-logo h3 {
    color: var(--white);
    font-size: var(--text-xl);
    margin: 0;
}

.footer-desc {
    font-size: var(--text-sm);
    margin-bottom: var(--space-6);
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.7);
}

.footer-social {
    display: flex;
    gap: var(--space-3);
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--white);
    transition: all var(--transition-base);
}

.social-link:hover {
    background: var(--accent);
    transform: translateY(-3px);
}

.footer-title {
    font-family: var(--font-body);
    font-size: var(--text-base);
    font-weight: 700;
    color: var(--white);
    margin-bottom: var(--space-6);
    position: relative;
    padding-bottom: var(--space-3);
}

.footer-title::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 40px;
    height: 3px;
    background: var(--accent);
    border-radius: var(--radius-full);
}

.footer-links li {
    margin-bottom: var(--space-3);
}

.footer-links a {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.7);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.footer-links a:hover {
    color: var(--accent);
    padding-left: var(--space-2);
}

.footer-links i {
    font-size: 10px;
    color: var(--accent);
}

.campus-links li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.7);
}

.campus-links i {
    color: var(--accent);
    margin-top: 3px;
}

.footer-contact li {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-5);
}

.footer-contact i {
    color: var(--accent);
    margin-top: 3px;
    font-size: var(--text-base);
}

.footer-contact a {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
}

.footer-contact a:hover {
    color: var(--accent);
}

.footer-contact span {
    display: block;
    font-size: var(--text-xs);
    color: rgba(255, 255, 255, 0.5);
    margin-top: var(--space-1);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--space-6) 0;
}

.footer-bottom-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-4);
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.6);
}

.footer-bottom-links {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.footer-bottom-links a:hover {
    color: var(--accent);
}

/* =============================================
   BACK TO TOP
   ============================================= */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--accent);
    color: var(--white);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-lg);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: var(--z-fixed);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--accent-dark);
    transform: translateY(-5px);
}

/* =============================================
   ANIMATIONS
   ============================================= */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

.reveal-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.8s ease;
}

.reveal-left.revealed {
    opacity: 1;
    transform: translateX(0);
}

.reveal-right {
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.8s ease;
}

.reveal-right.revealed {
    opacity: 1;
    transform: translateX(0);
}

/* =============================================
   RESPONSIVE STYLES
   ============================================= */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-about-col {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    /* Hide Top Bar on Mobile */
    .top-bar {
        display: none;
    }
    
    /* Mobile Navigation */
    .nav-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 300px;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        align-items: flex-start;
        padding: 100px var(--space-6) var(--space-6);
        gap: 0;
        box-shadow: var(--shadow-2xl);
        transition: right var(--transition-base);
        z-index: var(--z-modal);
        overflow-y: auto;
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-item {
        width: 100%;
    }
    
    .nav-link {
        padding: var(--space-4);
        border-bottom: 1px solid var(--gray-100);
        width: 100%;
    }
    
    .nav-link::after {
        display: none;
    }
    
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        padding-left: var(--space-6);
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-base);
        border: none;
    }
    
    .has-dropdown.active .dropdown-menu {
        max-height: 500px;
    }
    
    .dropdown-link {
        padding: var(--space-3) var(--space-4);
    }
    
    .nav-cta {
        margin-top: var(--space-4);
    }
    
    .nav-cta .btn {
        margin: 0;
        width: calc(100% - var(--space-8));
    }
    
    /* Logo */
    .logo-text {
        display: none;
    }
    
    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-about-col {
        grid-column: span 1;
    }
    
    .footer-title::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .footer-social,
    .footer-links a,
    .campus-links li {
        justify-content: center;
    }
    
    .footer-contact {
        justify-content: center;
    }
    
    .footer-contact li {
        justify-content: center;
        text-align: center;
    }
    
    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }
    
    .container {
        padding: 0 var(--space-4);
    }
    
    .section {
        padding: var(--space-12) 0;
    }
    
    .navbar {
        height: 70px;
    }
    
    .logo-img {
        height: 45px;
    }
}

/* =============================================
   PRINT STYLES
   ============================================= */
@media print {
    .header,
    .footer,
    .back-to-top,
    .preloader {
        display: none !important;
    }
    
    body {
        font-size: 12pt;
        color: #000;
    }
}

/* =============================================
   REDUCED MOTION
   ============================================= */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}
/* =============================================
   WHATSAPP FLOATING BUTTON
   ============================================= */
.whatsapp-float {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: #25D366;
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    z-index: var(--z-fixed);
    transition: all var(--transition-base);
    animation: whatsappPulse 2s ease-in-out infinite;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 30px rgba(37, 211, 102, 0.5);
    color: var(--white);
}

.whatsapp-tooltip {
    position: absolute;
    right: 75px;
    background: var(--white);
    color: var(--gray-700);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: 500;
    white-space: nowrap;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateX(10px);
    transition: all var(--transition-base);
}

.whatsapp-float:hover .whatsapp-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.whatsapp-tooltip::after {
    content: '';
    position: absolute;
    right: -6px;
    top: 50%;
    transform: translateY(-50%);
    border: 6px solid transparent;
    border-left-color: var(--white);
}

@keyframes whatsappPulse {
    0%, 100% { box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4); }
    50% { box-shadow: 0 4px 30px rgba(37, 211, 102, 0.6), 0 0 0 10px rgba(37, 211, 102, 0.1); }
}

/* Back to Top Position Adjust */
.back-to-top {
    bottom: 30px;
}

/* =============================================
   RESPONSIVE - WHATSAPP
   ============================================= */
@media (max-width: 768px) {
    .whatsapp-float {
        width: 55px;
        height: 55px;
        font-size: 28px;
        bottom: 90px;
        right: 20px;
    }
    
    .whatsapp-tooltip {
        display: none;
    }
    
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}