/* Modern CSS Reset and Base Styles */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color System */
    --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;
    
    --secondary-50: #fef3c7;
    --secondary-100: #fde68a;
    --secondary-200: #fcd34d;
    --secondary-300: #fbbf24;
    --secondary-400: #f59e0b;
    --secondary-500: #d97706;
    --secondary-600: #b45309;
    --secondary-700: #92400e;
    --secondary-800: #78350f;
    --secondary-900: #451a03;
    
    --success-50: #ecfdf5;
    --success-100: #d1fae5;
    --success-200: #a7f3d0;
    --success-300: #6ee7b7;
    --success-400: #34d399;
    --success-500: #10b981;
    --success-600: #059669;
    --success-700: #047857;
    --success-800: #065f46;
    --success-900: #064e3b;
    
    --danger-50: #fef2f2;
    --danger-100: #fee2e2;
    --danger-200: #fecaca;
    --danger-300: #fca5a5;
    --danger-400: #f87171;
    --danger-500: #ef4444;
    --danger-600: #dc2626;
    --danger-700: #b91c1c;
    --danger-800: #991b1b;
    --danger-900: #7f1d1d;
    
    --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;
    
    /* Typography */
    --font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-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;
    --space-32: 8rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 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);
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Z-Index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* Base Styles */
html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--gray-800);
    background-color: #ffffff;
    overflow-x: hidden;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

@media (min-width: 640px) {
    .container {
        padding: 0 var(--space-6);
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 var(--space-8);
    }
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--gray-900);
    margin-bottom: var(--space-4);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    user-select: none;
}

.btn:focus {
    outline: 2px solid var(--primary-500);
    outline-offset: 2px;
}

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

.btn-primary:hover {
    background: var(--primary-600);
    border-color: var(--primary-600);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-500);
    border-color: var(--primary-500);
}

.btn-secondary:hover {
    background: var(--primary-500);
    color: white;
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

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

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

.btn-full {
    width: 100%;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    transition: var(--transition);
}

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

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

.nav-brand h2 {
    color: var(--primary-500);
    font-size: var(--font-size-2xl);
    font-weight: 700;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--space-8);
    align-items: center;
}

.nav-menu a {
    color: var(--gray-700);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-menu a:hover {
    color: var(--primary-500);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-500);
    transition: var(--transition);
}

.nav-menu a:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
    padding: var(--space-2);
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-700) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    color: white;
    position: relative;
    overflow: hidden;
    padding-top: 80px; /* Add padding to account for fixed header */
}

.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 1000 1000"><defs><radialGradient id="a" cx="50%" cy="50%"><stop offset="0%" stop-color="%23ffffff" stop-opacity="0.1"/><stop offset="100%" stop-color="%23ffffff" stop-opacity="0"/></radialGradient></defs><circle cx="200" cy="200" r="100" fill="url(%23a)"/><circle cx="800" cy="300" r="150" fill="url(%23a)"/><circle cx="400" cy="700" r="120" fill="url(%23a)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-12);
    align-items: center;
}

.hero-text h1 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--space-6);
    line-height: 1.1;
}

.hero-text p {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-8);
    opacity: 0.9;
    color: white;
}

.hero-buttons {
    display: flex;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: var(--space-16);
}

.section-header h2 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--space-4);
}

.section-header p {
    font-size: var(--font-size-lg);
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
}

/* Features Section */
.features {
    padding: var(--space-24) 0;
    background: var(--gray-50);
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
}

.feature-card {
    background: white;
    padding: var(--space-8);
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-6);
}

.feature-icon i {
    font-size: var(--font-size-2xl);
    color: white;
}

.feature-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--space-4);
}

.feature-card p {
    color: var(--gray-600);
    line-height: 1.6;
}

/* Courses Section */
.courses {
    padding: var(--space-24) 0;
}

.courses-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
}

.course-card {
    background: white;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.course-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.course-image {
    position: relative;
    overflow: hidden;
}

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

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

.course-price {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    background: var(--primary-500);
    color: white;
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.course-content {
    padding: var(--space-6);
}

.course-category {
    color: var(--primary-500);
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--space-2);
}

.course-content h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--space-3);
}

.course-content p {
    color: var(--gray-600);
    margin-bottom: var(--space-6);
    line-height: 1.6;
}

.course-meta {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
    font-size: var(--font-size-sm);
    color: var(--gray-500);
    flex-wrap: wrap;
}

.course-meta span {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.course-meta i {
    color: var(--primary-500);
}

/* About Section */
.about {
    padding: var(--space-24) 0;
    background: var(--gray-50);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-12);
    align-items: center;
}

.about-text h2 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--space-6);
}

.about-text p {
    color: var(--gray-600);
    margin-bottom: var(--space-6);
    line-height: 1.7;
    font-size: var(--font-size-lg);
}

.stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
    margin-top: var(--space-8);
}

.stat {
    text-align: center;
    padding: var(--space-6);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
}

.stat h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary-500);
    margin-bottom: var(--space-2);
}

.stat p {
    color: var(--gray-600);
    font-weight: 500;
    margin: 0;
}

.about-image img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

/* Instructors Section */
.instructors {
    padding: var(--space-24) 0;
}

.instructors-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
}

.instructor-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.instructor-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.instructor-image {
    width: 120px;
    height: 120px;
    margin: 0 auto var(--space-6);
    border-radius: var(--radius-full);
    overflow: hidden;
    border: 4px solid var(--primary-500);
}

.instructor-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.instructor-info h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--space-2);
}

.instructor-info p {
    color: var(--gray-600);
    margin-bottom: var(--space-4);
}

.instructor-rating {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-1);
}

.instructor-rating i {
    color: var(--secondary-400);
}

.instructor-rating i.active {
    color: var(--secondary-500);
}

.instructor-rating span {
    color: var(--gray-600);
    font-size: var(--font-size-sm);
    margin-left: var(--space-2);
}

/* Contact Section */
.contact {
    padding: var(--space-24) 0;
    background: var(--gray-50);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-12);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
}

.contact-item i {
    width: 50px;
    height: 50px;
    background: var(--primary-500);
    color: white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-2);
}

.contact-item p {
    color: var(--gray-600);
    line-height: 1.6;
    margin: 0;
}

.contact-form {
    background: white;
    padding: var(--space-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
}

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

.form-group label {
    display: block;
    margin-bottom: var(--space-2);
    font-weight: 500;
    color: var(--gray-700);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--space-4);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    transition: var(--transition);
    font-family: inherit;
}

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

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

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

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
    margin-bottom: var(--space-8);
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: var(--space-4);
    color: var(--primary-400);
}

.footer-section p {
    color: var(--gray-300);
    line-height: 1.6;
    margin-bottom: var(--space-4);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--space-2);
}

.footer-section ul li a {
    color: var(--gray-300);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--primary-400);
}

.social-links {
    display: flex;
    gap: var(--space-4);
}

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--gray-700);
    color: white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary-500);
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-8);
    border-top: 1px solid var(--gray-700);
    color: var(--gray-400);
}

/* Alerts */
.alert {
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.alert-success {
    background: var(--success-50);
    color: var(--success-700);
    border: 1px solid var(--success-200);
}

.alert-error {
    background: var(--danger-50);
    color: var(--danger-700);
    border: 1px solid var(--danger-200);
}

/* Login Styles */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-50);
    padding: var(--space-4);
}

.login-form {
    background: white;
    padding: var(--space-8);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 400px;
}

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

.login-header h2 {
    color: var(--gray-900);
    margin-bottom: var(--space-2);
}

.login-header p {
    color: var(--gray-600);
    margin: 0;
}

.login-footer {
    text-align: center;
    margin-top: var(--space-6);
    padding-top: var(--space-6);
    border-top: 1px solid var(--gray-200);
}

.login-footer p {
    color: var(--gray-500);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-2);
}

.login-footer a {
    color: var(--primary-500);
    text-decoration: none;
    font-weight: 500;
}

.login-footer a:hover {
    text-decoration: underline;
}

/* Responsive Design */
@media (min-width: 640px) {
    .hero .container {
        grid-template-columns: 1fr 1fr;
    }
    
    .hero-text h1 {
        font-size: var(--font-size-5xl);
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .courses-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .instructors-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-content {
        grid-template-columns: 1fr 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr 1fr;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 768px) {
    .nav-toggle {
        display: none;
    }
    
    .nav-menu {
        display: flex;
    }
    
    .features-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .courses-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .instructors-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .hero-text h1 {
        font-size: var(--font-size-6xl);
    }
    
    .courses-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .stats {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 767px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 80px;
        flex-direction: column;
        background: white;
        width: 100%;
        text-align: center;
        transition: var(--transition);
        box-shadow: var(--shadow-lg);
        padding: var(--space-8) 0;
        border-top: 1px solid var(--gray-200);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-text h1 {
        font-size: var(--font-size-3xl);
    }
    
    .section-header h2 {
        font-size: var(--font-size-2xl);
    }
    
    .stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-buttons {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-3);
    }
    
    .hero-text h1 {
        font-size: var(--font-size-2xl);
    }
    
    .btn {
        padding: var(--space-3) var(--space-5);
        font-size: var(--font-size-sm);
    }
    
    .stats {
        grid-template-columns: 1fr;
    }
    
    .features-grid,
    .courses-grid,
    .instructors-grid {
        grid-template-columns: 1fr;
    }
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--primary-500);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-600);
}

/* Focus styles for accessibility */
*:focus {
    outline: 2px solid var(--primary-500);
    outline-offset: 2px;
}

/* Gallery Styles */
.gallery {
    padding: 6rem 0;
    background: var(--gray-50);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.gallery-item {
    position: relative;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    cursor: pointer;
    background: white;
}

.gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.gallery-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(79, 70, 229, 0.9), rgba(139, 92, 246, 0.9));
    opacity: 0;
    transition: opacity 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-info {
    text-align: center;
    color: white;
    padding: 1rem;
}

.gallery-info h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.gallery-info p {
    font-size: 0.9rem;
    opacity: 0.9;
}

/* Image Modal Styles */
.image-modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(5px);
}

.image-modal-content {
    position: relative;
    margin: 2% auto;
    padding: 0;
    width: 90%;
    max-width: 1200px;
    height: 90%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.image-modal-close {
    position: absolute;
    top: 20px;
    right: 35px;
    color: white;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    z-index: 10001;
    background: rgba(0, 0, 0, 0.5);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s ease;
}

.image-modal-close:hover {
    background: rgba(0, 0, 0, 0.8);
}

.image-modal-content img {
    max-width: 100%;
    max-height: 80%;
    object-fit: contain;
    border-radius: 10px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.image-modal-info {
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 1.5rem;
    border-radius: 10px;
    margin-top: 1rem;
    text-align: center;
    max-width: 600px;
}

.image-modal-info h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.image-modal-info p {
    font-size: 1rem;
    opacity: 0.9;
    line-height: 1.6;
}

/* Responsive Gallery */
@media (max-width: 768px) {
    .gallery-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 1rem;
    }
    
    .gallery-item img {
        height: 200px;
    }
    
    .image-modal-content {
        width: 95%;
        height: 95%;
        margin: 2.5% auto;
    }
    
    .image-modal-close {
        top: 10px;
        right: 20px;
        font-size: 30px;
        width: 40px;
        height: 40px;
    }
    
    .image-modal-info {
        padding: 1rem;
        margin-top: 0.5rem;
    }
    
    .image-modal-info h3 {
        font-size: 1.25rem;
    }
    
    .image-modal-info p {
        font-size: 0.9rem;
    }
}

/* Floating WhatsApp Button */
.whatsapp-float {
    position: fixed;
    bottom: 110px;
    right: 25px;
    z-index: 1000;
}

.whatsapp-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 65px;
    height: 65px;
    background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
    border-radius: 50%;
    color: white;
    text-decoration: none;
    box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    animation: whatsappPulse 3s infinite;
    border: 3px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
}

.whatsapp-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.1) 50%, transparent 70%);
    transform: translateX(-100%);
    transition: transform 0.6s;
}

.whatsapp-btn:hover::before {
    transform: translateX(100%);
}

.whatsapp-btn:hover {
    background: linear-gradient(135deg, #128C7E 0%, #25D366 100%);
    transform: scale(1.15) rotate(5deg);
    box-shadow: 0 12px 35px rgba(37, 211, 102, 0.6);
    border-color: rgba(255, 255, 255, 0.4);
}

.whatsapp-btn i {
    font-size: 32px;
    position: relative;
    z-index: 1;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

@keyframes whatsappPulse {
    0% {
        box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4);
        transform: scale(1);
    }
    50% {
        box-shadow: 0 8px 25px rgba(37, 211, 102, 0.7), 0 0 0 10px rgba(37, 211, 102, 0.1);
        transform: scale(1.05);
    }
    100% {
        box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4);
        transform: scale(1);
    }
}

/* Responsive WhatsApp Button */
@media (max-width: 768px) {
    .whatsapp-float {
        bottom: 100px;
        right: 20px;
    }
    
    .whatsapp-btn {
        width: 55px;
        height: 55px;
    }
    
    .whatsapp-btn i {
        font-size: 26px;
    }
}

@media (max-width: 480px) {
    .whatsapp-float {
        bottom: 90px;
        right: 15px;
    }
    
    .whatsapp-btn {
        width: 50px;
        height: 50px;
    }
    
    .whatsapp-btn i {
        font-size: 24px;
    }
}

/* Print styles */
@media print {
    .header,
    .footer,
    .btn,
    .whatsapp-float {
        display: none;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
}