/* ============================================
   CSS Variables & Design System
   ============================================ */
:root {
    /* Split-Complementary Color Scheme */
    --primary-color: #00D9FF;
    --primary-dark: #00A8CC;
    --primary-light: #66E5FF;
    
    --secondary-color: #FF3D71;
    --secondary-dark: #CC314E;
    --secondary-light: #FF7099;
    
    --accent-color: #FFBD39;
    --accent-dark: #CC9729;
    --accent-light: #FFD073;
    
    /* Neutral Colors */
    --bg-primary: #0A0E27;
    --bg-secondary: #1A1F3A;
    --bg-tertiary: #2A2F4A;
    --bg-light: #F5F7FA;
    
    --text-primary: #FFFFFF;
    --text-secondary: #B8C5D6;
    --text-dark: #1A1F3A;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #00D9FF 0%, #00A8CC 100%);
    --gradient-secondary: linear-gradient(135deg, #FF3D71 0%, #CC314E 100%);
    --gradient-accent: linear-gradient(135deg, #FFBD39 0%, #FF3D71 100%);
    --gradient-bg: linear-gradient(135deg, #0A0E27 0%, #1A1F3A 50%, #2A2F4A 100%);
    
    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.37);
    
    /* Volumetric UI Shadows */
    --shadow-small: 0 4px 6px rgba(0, 217, 255, 0.1), 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-medium: 0 10px 20px rgba(0, 217, 255, 0.15), 0 6px 6px rgba(0, 0, 0, 0.1);
    --shadow-large: 0 20px 40px rgba(0, 217, 255, 0.2), 0 10px 10px rgba(0, 0, 0, 0.15);
    --shadow-volumetric: 0 30px 60px rgba(0, 217, 255, 0.25), 0 15px 20px rgba(255, 61, 113, 0.2);
    
    /* Typography */
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Work Sans', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 50%;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-morph: 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* ============================================
   Global Styles
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.7;
    color: var(--text-secondary);
    background: var(--gradient-bg);
    overflow-x: hidden;
}

::selection {
    background: var(--primary-color);
    color: var(--text-dark);
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    letter-spacing: -0.01em;
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
}

p {
    margin-bottom: var(--spacing-sm);
    font-size: 1.125rem;
    color: var(--text-secondary);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: all var(--transition-normal);
}

a:hover {
    color: var(--primary-light);
}

/* ============================================
   Container & Layout
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    width: 100%;
}

/* ============================================
   Buttons - GLOBAL STYLES
   ============================================ */
.btn,
button[type="submit"],
input[type="submit"] {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-family: var(--font-heading);
    font-size: 1.125rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-morph);
    position: relative;
    overflow: hidden;
    z-index: 1;
    box-shadow: var(--shadow-medium);
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, rgba(255,255,255,0) 100%);
    z-index: -1;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.btn:hover::before {
    opacity: 1;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-primary);
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: var(--shadow-large);
}

.btn-secondary {
    background: var(--glass-bg);
    color: var(--text-primary);
    border: 2px solid var(--glass-border);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: var(--glass-border);
    transform: translateY(-3px) scale(1.05);
    box-shadow: var(--shadow-large);
}

/* ============================================
   Header & Navigation
   ============================================ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(10, 14, 39, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 1000;
    box-shadow: var(--shadow-medium);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo a {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: all var(--transition-morph);
}

.logo a:hover {
    transform: scale(1.05);
    filter: drop-shadow(0 0 10px var(--primary-color));
}

.main-nav {
    display: flex;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-list a {
    font-family: var(--font-heading);
    font-weight: 500;
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-morph);
    position: relative;
}

.nav-list a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: all var(--transition-morph);
    transform: translateX(-50%);
}

.nav-list a:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
}

.nav-list a:hover::after {
    width: 80%;
}

.burger-menu {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.burger-menu span {
    width: 30px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 3px;
    transition: all var(--transition-normal);
}

/* ============================================
   Hero Section
   ============================================ */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    padding: var(--spacing-xl) 0;
    margin-top: 80px;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.15) 0%, rgba(255, 61, 113, 0.15) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    background: rgba(10, 14, 39, 0.7);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-lg);
    border: 2px solid var(--glass-border);
    box-shadow: var(--shadow-volumetric);
    animation: heroMorph 1s var(--transition-morph) forwards;
}

@keyframes heroMorph {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(30px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.hero-title {
    font-size: clamp(3rem, 6vw, 5rem);
    font-weight: 800;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================
   Section Styles
   ============================================ */
section {
    padding: var(--spacing-xl) 0;
    position: relative;
}

.section-title {
    text-align: center;
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    margin-bottom: var(--spacing-sm);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================
   About Section
   ============================================ */
.about-section {
    background: rgba(26, 31, 58, 0.5);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.about-text h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.about-text p {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.about-image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-volumetric);
}

.about-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    transition: transform var(--transition-slow);
}

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

.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.stat-widget {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--glass-bg);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-medium);
    transition: all var(--transition-morph);
}

.stat-widget:hover {
    transform: translateY(-10px) scale(1.05);
    box-shadow: var(--shadow-volumetric);
    border-color: var(--primary-color);
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

/* ============================================
   Features Section
   ============================================ */
.features-section {
    background: rgba(10, 14, 39, 0.5);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    padding: var(--spacing-lg);
    background: var(--glass-bg);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-medium);
    transition: all var(--transition-morph);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.feature-card:hover {
    transform: translateY(-15px) scale(1.03);
    box-shadow: var(--shadow-volumetric);
    border-color: var(--primary-color);
}

.feature-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    filter: drop-shadow(0 0 20px var(--primary-color));
    animation: float 3s ease-in-out infinite;
}

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

.feature-card h3 {
    color: var(--primary-light);
    margin-bottom: var(--spacing-sm);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================================
   Portfolio Section
   ============================================ */
.portfolio-section {
    background: rgba(26, 31, 58, 0.5);
}

.portfolio-carousel {
    position: relative;
    margin-top: var(--spacing-lg);
}

.carousel-container {
    overflow: hidden;
    border-radius: var(--radius-lg);
}

.portfolio-item {
    display: none;
    opacity: 0;
    transition: opacity var(--transition-slow);
}

.portfolio-item.active {
    display: block;
    animation: fadeInMorph 0.6s var(--transition-morph) forwards;
}

@keyframes fadeInMorph {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.portfolio-item .image-container {
    position: relative;
    width: 100%;
    height: 600px;
    overflow: hidden;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-volumetric);
}

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

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

.portfolio-info {
    padding: var(--spacing-lg);
    background: var(--glass-bg);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
    margin-top: -50px;
    position: relative;
    z-index: 2;
    margin-left: var(--spacing-md);
    margin-right: var(--spacing-md);
}

.portfolio-info h3 {
    color: var(--primary-light);
    margin-bottom: var(--spacing-sm);
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: var(--glass-bg);
    border: 2px solid var(--primary-color);
    color: var(--text-primary);
    font-size: 2rem;
    width: 60px;
    height: 60px;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-morph);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-medium);
    z-index: 10;
}

.carousel-btn:hover {
    background: var(--primary-color);
    transform: translateY(-50%) scale(1.15);
    box-shadow: var(--shadow-volumetric);
}

.prev-btn {
    left: var(--spacing-md);
}

.next-btn {
    right: var(--spacing-md);
}

/* ============================================
   Instructors/Team Section
   ============================================ */
.instructors-section {
    background: rgba(10, 14, 39, 0.5);
}

.instructors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.card {
    background: var(--glass-bg);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-medium);
    transition: all var(--transition-morph);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.card:hover {
    transform: translateY(-15px) scale(1.03);
    box-shadow: var(--shadow-volumetric);
    border-color: var(--primary-color);
}

.card-image {
    width: 100%;
    overflow: hidden;
}

.card-image .image-container {
    position: relative;
    width: 100%;
    height: 350px;
    overflow: hidden;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
    display: block;
    margin: 0 auto;
}

.card:hover .card-image img {
    transform: scale(1.1);
}

.card-content {
    padding: var(--spacing-md);
    text-align: center;
}

.card-content h3 {
    color: var(--primary-light);
    margin-bottom: var(--spacing-xs);
}

.team-role {
    color: var(--secondary-light);
    font-weight: 600;
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
}

/* ============================================
   Events Calendar Section
   ============================================ */
.events-section {
    background: rgba(26, 31, 58, 0.5);
}

.events-calendar {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.event-card {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--glass-bg);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-medium);
    transition: all var(--transition-morph);
}

.event-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--shadow-volumetric);
    border-color: var(--accent-color);
}

.event-date {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--gradient-accent);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-medium);
}

.date-day {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-dark);
    line-height: 1;
}

.date-month {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-dark);
    text-transform: uppercase;
}

.event-details h3 {
    color: var(--primary-light);
    margin-bottom: var(--spacing-xs);
}

.event-location {
    color: var(--accent-light);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.event-link {
    display: inline-block;
    margin-top: var(--spacing-sm);
    color: var(--primary-color);
    font-weight: 600;
    transition: all var(--transition-normal);
    position: relative;
}

.event-link::after {
    content: ' →';
    transition: transform var(--transition-normal);
    display: inline-block;
}

.event-link:hover {
    color: var(--primary-light);
    transform: translateX(5px);
}

.event-link:hover::after {
    transform: translateX(5px);
}

/* ============================================
   Research Section
   ============================================ */
.research-section {
    background: rgba(10, 14, 39, 0.5);
}

.research-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.research-text h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.research-text p {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.research-image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-volumetric);
}

.research-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    transition: transform var(--transition-slow);
}

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

/* ============================================
   Innovation Section
   ============================================ */
.innovation-section {
    background: rgba(26, 31, 58, 0.5);
}

.innovation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.innovation-card {
    background: var(--glass-bg);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-medium);
    transition: all var(--transition-morph);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.innovation-card:hover {
    transform: translateY(-15px) scale(1.03);
    box-shadow: var(--shadow-volumetric);
    border-color: var(--secondary-color);
}

.innovation-card .card-image {
    width: 100%;
    overflow: hidden;
}

.innovation-card .image-container {
    position: relative;
    width: 100%;
    height: 300px;
    overflow: hidden;
}

.innovation-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
    display: block;
    margin: 0 auto;
}

.innovation-card:hover img {
    transform: scale(1.1);
}

.innovation-card .card-content {
    padding: var(--spacing-md);
    text-align: center;
}

.innovation-card h3 {
    color: var(--secondary-light);
    margin-bottom: var(--spacing-sm);
}

/* ============================================
   Resources Section
   ============================================ */
.resources-section {
    background: rgba(10, 14, 39, 0.5);
}

.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.resource-card {
    padding: var(--spacing-lg);
    background: var(--glass-bg);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-medium);
    transition: all var(--transition-morph);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.resource-card:hover {
    transform: translateY(-10px) scale(1.03);
    box-shadow: var(--shadow-volumetric);
    border-color: var(--accent-color);
}

.resource-card h3 {
    color: var(--accent-light);
    margin-bottom: var(--spacing-sm);
}

.resource-link {
    display: inline-block;
    margin-top: var(--spacing-md);
    padding: 0.75rem 1.5rem;
    background: var(--gradient-accent);
    color: var(--text-dark);
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: all var(--transition-morph);
}

.resource-link:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-medium);
}

/* ============================================
   Contact Section
   ============================================ */
.contact-section {
    background: rgba(26, 31, 58, 0.5);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-lg);
}

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

.info-card {
    padding: var(--spacing-md);
    background: var(--glass-bg);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-medium);
    transition: all var(--transition-morph);
}

.info-card:hover {
    transform: translateX(10px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-large);
}

.info-card h3 {
    color: var(--primary-light);
    margin-bottom: var(--spacing-sm);
    font-size: 1.25rem;
}

.info-card p {
    margin: 0;
    line-height: 1.8;
}

.info-card a {
    color: var(--text-secondary);
    transition: color var(--transition-normal);
}

.info-card a:hover {
    color: var(--primary-color);
}

.contact-form-container {
    padding: var(--spacing-lg);
    background: var(--glass-bg);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-medium);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    font-family: var(--font-heading);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: all var(--transition-normal);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 4px rgba(0, 217, 255, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-secondary);
}

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

/* ============================================
   Footer
   ============================================ */
.site-footer {
    background: rgba(10, 14, 39, 0.95);
    border-top: 2px solid var(--glass-border);
    padding: var(--spacing-xl) 0 var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-column h4 {
    color: var(--primary-light);
    margin-bottom: var(--spacing-md);
    font-size: 1.25rem;
}

.footer-column p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.7;
}

.footer-contact p {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-links a {
    color: var(--text-secondary);
    transition: all var(--transition-normal);
    display: inline-block;
}

.footer-links a:hover {
    color: var(--primary-color);
    transform: translateX(5px);
}

.social-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.social-links a {
    color: var(--text-secondary);
    font-weight: 600;
    padding: 0.5rem 1rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    transition: all var(--transition-morph);
    display: inline-block;
}

.social-links a:hover {
    color: var(--text-primary);
    background: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateX(5px) scale(1.05);
    box-shadow: var(--shadow-medium);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--glass-border);
}

.footer-bottom p {
    color: var(--text-secondary);
    margin: 0;
}

/* ============================================
   Success Page
   ============================================ */
.success-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.success-content {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--glass-bg);
    border: 2px solid var(--glass-border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-volumetric);
    max-width: 600px;
}

/* ============================================
   Privacy & Terms Pages
   ============================================ */
.privacy-page,
.terms-page {
    padding-top: 100px;
    min-height: 100vh;
}

.content-wrapper {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md);
}

.content-wrapper h1 {
    margin-bottom: var(--spacing-lg);
}

.content-wrapper h2 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    color: var(--primary-light);
}

.content-wrapper p {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.content-wrapper ul {
    margin-left: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.content-wrapper li {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
    line-height: 1.7;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .about-content,
    .research-content {
        grid-template-columns: 1fr;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .stats-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .main-nav {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: rgba(10, 14, 39, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: var(--spacing-lg);
        transition: left var(--transition-normal);
        z-index: 999;
    }
    
    .main-nav.active {
        left: 0;
    }
    
    .nav-list {
        flex-direction: column;
        gap: var(--spacing-md);
        width: 100%;
    }
    
    .nav-list a {
        width: 100%;
        text-align: center;
        padding: 1rem;
        font-size: 1.25rem;
    }
    
    .burger-menu {
        display: flex;
    }
    
    .burger-menu.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }
    
    .burger-menu.active span:nth-child(2) {
        opacity: 0;
    }
    
    .burger-menu.active span:nth-child(3) {
        transform: rotate(-45deg) translate(8px, -8px);
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .features-grid,
    .instructors-grid,
    .innovation-grid {
        grid-template-columns: 1fr;
    }
    
    .events-calendar {
        grid-template-columns: 1fr;
    }
    
    .stats-container {
        grid-template-columns: 1fr;
    }
    
    .carousel-btn {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }
    
    .prev-btn {
        left: var(--spacing-sm);
    }
    
    .next-btn {
        right: var(--spacing-sm);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .social-links {
        align-items: center;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-xl: 3rem;
    }
    
    .hero-content {
        padding: var(--spacing-md);
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .portfolio-item .image-container {
        height: 400px;
    }
    
    .card-image .image-container,
    .innovation-card .image-container {
        height: 250px;
    }
}

/* ============================================
   Utility Classes
   ============================================ */
.text-center {
    text-align: center;
}

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

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

.text-accent {
    color: var(--accent-color);
}

.bg-glass {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
}

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.fade-in {
    animation: fadeInMorph 0.6s var(--transition-morph) forwards;
}

.slide-up {
    animation: slideUp 0.6s var(--transition-morph) forwards;
}

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

/* ============================================
   Loading Animation
   ============================================ */
.loading {
    display: inline-block;
    width: 50px;
    height: 50px;
    border: 4px solid var(--glass-border);
    border-top-color: var(--primary-color);
    border-radius: var(--radius-full);
    animation: spin 1s linear infinite;
}

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

/* ============================================
   Accessibility
   ============================================ */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 3px;
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .site-header,
    .burger-menu,
    .hero-buttons,
    .carousel-btn,
    .contact-form {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
}