/* ==========================================
   Global Styles & Variables
   ========================================== */

:root {
    /* Color Palette */
    --primary-color: #2ed8ff;
    --secondary-color: #4f7dff;
    --accent-color: #ff4ecb;
    --dark-bg: #03102a;
    --darker-bg: #010716;
    --light-text: #eaf7ff;
    --gray-text: #90a9c8;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #00c3ff 0%, #4f7dff 60%, #8a4dff 100%);
    --gradient-secondary: linear-gradient(135deg, #00b8ff 0%, #ff4ecb 100%);
    --gradient-hero: radial-gradient(circle at 20% 15%, rgba(0, 195, 255, 0.28) 0%, transparent 35%), radial-gradient(circle at 82% 70%, rgba(255, 78, 203, 0.22) 0%, transparent 33%), linear-gradient(135deg, #031331 0%, #020b1f 55%, #041a3e 100%);
    --gradient-card: linear-gradient(135deg, rgba(0, 195, 255, 0.1) 0%, rgba(79, 125, 255, 0.1) 55%, rgba(255, 78, 203, 0.08) 100%);
    
    /* Spacing */
    --section-padding: 80px 0;
    --container-padding: 0 20px;
    
    /* Typography */
    --font-primary: 'Poppins', sans-serif;
    --font-heading: 'Orbitron', sans-serif;
    
    /* Transitions */
    --transition-smooth: all 0.3s ease;
    --transition-slow: all 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--dark-bg);
    background-image: radial-gradient(circle at 15% 20%, rgba(46, 216, 255, 0.14) 0%, transparent 28%), radial-gradient(circle at 85% 15%, rgba(79, 125, 255, 0.16) 0%, transparent 24%), radial-gradient(circle at 80% 80%, rgba(255, 78, 203, 0.12) 0%, transparent 26%);
    color: var(--light-text);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--container-padding);
}

/* ==========================================
   Navigation Bar
   ========================================== */

.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(2, 14, 38, 0.92);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 15px 0;
    box-shadow: 0 2px 22px rgba(0, 105, 170, 0.22);
    transition: var(--transition-smooth);
}

.navbar.scrolled {
    padding: 10px 0;
    box-shadow: 0 6px 28px rgba(0, 92, 178, 0.32);
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: #6cf7ff;
    text-shadow: 0 0 12px rgba(46, 216, 255, 0.4);
}

.nav-logo {
    width: 50px;
    height: 50px;
    object-fit: contain;
    filter: drop-shadow(0 2px 8px rgba(46, 216, 255, 0.3));
}

.nav-brand i {
    font-size: 1.8rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--light-text);
    border-radius: 3px;
    transition: var(--transition-smooth);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

.nav-link {
    color: var(--light-text);
    text-decoration: none;
    font-weight: 500;
    padding: 8px 15px;
    border-radius: 8px;
    transition: var(--transition-smooth);
    position: relative;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-smooth);
}

.nav-link:hover::before,
.nav-link.active::before {
    width: 80%;
}

.nav-link:hover,
.nav-link.active {
    color: #fff;
}

/* ==========================================
   Hero Section
   ========================================== */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--darker-bg);
    overflow: hidden;
    padding-top: 80px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-hero);
    opacity: 1;
}

.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: linear-gradient(120deg, transparent 10%, rgba(46, 216, 255, 0.08) 35%, transparent 55%), linear-gradient(-130deg, transparent 20%, rgba(255, 78, 203, 0.07) 42%, transparent 68%);
}

.particle {
    position: absolute;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(46, 216, 255, 0.28) 0%, rgba(79, 125, 255, 0.18) 45%, transparent 72%);
    animation: float 20s infinite ease-in-out;
}

.particle:nth-child(1) {
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.particle:nth-child(2) {
    top: 60%;
    left: 80%;
    animation-delay: 2s;
}

.particle:nth-child(3) {
    top: 80%;
    left: 20%;
    animation-delay: 4s;
}

.particle:nth-child(4) {
    top: 30%;
    left: 70%;
    animation-delay: 6s;
}

.particle:nth-child(5) {
    top: 50%;
    left: 50%;
    animation-delay: 8s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(50px, -50px) scale(1.1);
    }
    66% {
        transform: translate(-50px, 50px) scale(0.9);
    }
}

.hero-content {
    text-align: center;
    z-index: 1;
    max-width: 900px;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 4rem;
    font-weight: 900;
    margin-bottom: 20px;
    line-height: 1.2;
}

.gradient-text {
    color: #7afcff;
    text-shadow: 0 0 18px rgba(46, 216, 255, 0.45);
}

.kr-mark {
    background: linear-gradient(135deg, #ffffff 0%, #eef4ff 35%, #c6d2e6 65%, #ffffff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 900;
    -webkit-text-stroke: 1px rgba(1, 10, 28, 0.9);
    text-shadow: 0 0 8px rgba(255, 255, 255, 0.92), 0 0 16px rgba(198, 210, 230, 0.72), 0 0 30px rgba(46, 216, 255, 0.38);
}

.hero-tagline {
    font-size: 1.8rem;
    font-weight: 300;
    margin-bottom: 30px;
    color: var(--gray-text);
}

.hero-details {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 25px;
    flex-wrap: wrap;
}

.detail-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.1rem;
}

.detail-item i {
    color: var(--primary-color);
    font-size: 1.3rem;
}

.hero-organizers {
    margin-bottom: 40px;
    color: var(--gray-text);
}

.hero-organizers p {
    margin: 5px 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.hero-organizers i {
    color: var(--accent-color);
}

.hero-organizers strong {
    color: var(--light-text);
}

.hero-qr {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 14px;
    background: rgba(3, 16, 42, 0.62);
    border: 1px solid rgba(46, 216, 255, 0.35);
    border-radius: 18px;
    box-shadow: 0 10px 28px rgba(0, 112, 181, 0.3);
}

.hero-qr-image {
    width: 180px;
    height: 180px;
    border-radius: 12px;
    background: #fff;
    padding: 8px;
}

.hero-qr-text {
    font-weight: 600;
    color: var(--light-text);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

/* ==========================================
   Buttons
   ========================================== */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 30px;
    border: none;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition-smooth);
    font-family: var(--font-primary);
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: 0 4px 16px rgba(46, 216, 255, 0.35);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 26px rgba(46, 216, 255, 0.5);
}

.btn-large {
    padding: 15px 40px;
    font-size: 1.1rem;
}

/* ==========================================
   Section Styles
   ========================================== */

.section {
    padding: var(--section-padding);
    position: relative;
}

.section:nth-child(even) {
    background: rgba(2, 13, 36, 0.58);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.title-underline {
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    margin: 0 auto 15px;
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--gray-text);
}

/* ==========================================
   About Section
   ========================================== */

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: start;
}

.about-text .lead {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: var(--light-text);
}

.about-text p {
    margin-bottom: 15px;
    color: var(--gray-text);
    line-height: 1.8;
}

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

.about-features {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.feature-card {
    background: var(--gradient-card);
    border: 1px solid rgba(46, 216, 255, 0.2);
    padding: 25px;
    border-radius: 15px;
    transition: var(--transition-smooth);
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: rgba(46, 216, 255, 0.5);
    box-shadow: 0 10px 30px rgba(46, 216, 255, 0.2);
}

.feature-icon {
    font-size: 2.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 15px;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: var(--light-text);
}

.feature-card p {
    color: var(--gray-text);
}

/* ==========================================
   Event Flow Section
   ========================================== */

.flow-timeline {
    max-width: 900px;
    margin: 0 auto;
}

.flow-round-info {
    max-width: 900px;
    margin: 0 auto 35px;
    background: var(--gradient-card);
    border: 1px solid rgba(46, 216, 255, 0.26);
    border-radius: 16px;
    padding: 26px;
    box-shadow: 0 10px 30px rgba(0, 100, 170, 0.18);
}

.flow-round-info h3 {
    font-size: 1.35rem;
    margin-bottom: 12px;
    color: var(--light-text);
    display: flex;
    align-items: center;
    gap: 10px;
}

.flow-round-info h3 i {
    color: var(--primary-color);
}

.flow-round-info p {
    color: var(--gray-text);
    line-height: 1.8;
}

.flow-round-highlight {
    margin-top: 18px;
    padding: 12px 18px;
    text-align: center;
    color: var(--light-text);
    font-weight: 700;
    background: linear-gradient(135deg, rgba(46, 216, 255, 0.16) 0%, rgba(79, 125, 255, 0.14) 55%, rgba(255, 78, 203, 0.14) 100%);
    border: 1px solid rgba(46, 216, 255, 0.3);
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 100, 170, 0.16);
}

.timeline-item {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 30px;
    margin-bottom: 50px;
    position: relative;
}

.timeline-item:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 40px;
    top: 80px;
    width: 2px;
    height: calc(100% + 20px);
    background: linear-gradient(180deg, var(--primary-color) 0%, transparent 100%);
}

.timeline-number {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    box-shadow: 0 5px 20px rgba(46, 216, 255, 0.4);
}

.timeline-content {
    background: var(--gradient-card);
    border: 1px solid rgba(46, 216, 255, 0.2);
    padding: 30px;
    border-radius: 15px;
    transition: var(--transition-smooth);
}

.timeline-content:hover {
    border-color: rgba(46, 216, 255, 0.5);
    transform: translateX(10px);
}

.timeline-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.timeline-content h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: var(--light-text);
}

.timeline-content p {
    color: var(--gray-text);
    line-height: 1.8;
}

/* ==========================================
   Event Details Section
   ========================================== */

.details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.detail-box {
    background: var(--gradient-card);
    border: 1px solid rgba(46, 216, 255, 0.2);
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    transition: var(--transition-smooth);
}

.detail-box:hover {
    transform: translateY(-10px);
    border-color: rgba(46, 216, 255, 0.5);
    box-shadow: 0 15px 40px rgba(46, 216, 255, 0.3);
}

.detail-icon {
    font-size: 3rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
}

.detail-box h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: var(--light-text);
}

.detail-box p {
    color: var(--gray-text);
    font-size: 1.1rem;
}

/* ==========================================
   Rules Section
   ========================================== */

.rules-list {
    max-width: 900px;
    margin: 0 auto;
    display: grid;
    gap: 25px;
}

.rule-item {
    display: flex;
    gap: 25px;
    background: var(--gradient-card);
    border: 1px solid rgba(46, 216, 255, 0.2);
    padding: 25px;
    border-radius: 15px;
    transition: var(--transition-smooth);
}

.rule-item:hover {
    border-color: rgba(46, 216, 255, 0.5);
    transform: translateX(10px);
}

.rule-icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: #fff;
}

.rule-text h4 {
    font-size: 1.3rem;
    margin-bottom: 8px;
    color: var(--light-text);
}

.rule-text p {
    color: var(--gray-text);
    line-height: 1.8;
}

/* ==========================================
   Prizes Section
   ========================================== */

.prizes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.prize-card {
    background: var(--gradient-card);
    border: 2px solid rgba(46, 216, 255, 0.2);
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.prize-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition-smooth);
}

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

.prize-card:hover {
    transform: translateY(-10px);
    border-color: rgba(46, 216, 255, 0.6);
    box-shadow: 0 20px 50px rgba(46, 216, 255, 0.3);
}

.prize-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 25px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
}

.prize-icon.winner {
    background: linear-gradient(135deg, #ffd700 0%, #ffed4e 100%);
    color: #333;
}

.prize-icon.runner {
    background: linear-gradient(135deg, #c0c0c0 0%, #e8e8e8 100%);
    color: #333;
}

.prize-icon.innovation {
    background: var(--gradient-primary);
    color: #fff;
}

.prize-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--light-text);
}

.prize-amount {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.prize-desc {
    color: var(--gray-text);
}

.prizes-note {
    text-align: center;
    color: var(--gray-text);
    font-style: italic;
}

/* ==========================================
   Registration Section
   ========================================== */

.registration-content {
    max-width: 700px;
    margin: 0 auto;
}

.registration-form {
    background: var(--gradient-card);
    border: 1px solid rgba(46, 216, 255, 0.2);
    padding: 40px;
    border-radius: 20px;
}

.registration-success {
    display: none;
    text-align: center;
    padding: 60px 40px;
    background: var(--gradient-card);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: 20px;
}

.registration-success.show {
    display: block;
}

.success-icon {
    font-size: 5rem;
    color: var(--success-color);
    margin-bottom: 20px;
}

.registration-success h3 {
    font-size: 2rem;
    margin-bottom: 15px;
    color: var(--success-color);
}

.registration-success p {
    color: var(--gray-text);
    font-size: 1.1rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--light-text);
}

.form-group label i {
    color: var(--primary-color);
    margin-right: 5px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid rgba(46, 216, 255, 0.3);
    border-radius: 8px;
    color: var(--light-text);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: var(--transition-smooth);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(46, 216, 255, 0.12);
}

.form-group textarea {
    resize: vertical;
}

.checkbox-group {
    margin: 30px 0;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.checkbox-label a {
    color: var(--primary-color);
    text-decoration: none;
}

.checkbox-label a:hover {
    text-decoration: underline;
}

.error-message {
    display: block;
    color: #ef4444;
    font-size: 0.875rem;
    margin-top: 5px;
    min-height: 20px;
}

.form-group.error input,
.form-group.error textarea {
    border-color: #ef4444;
}

/* ==========================================
   Contact Section
   ========================================== */

.contact-qr-link {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 14px;
    text-decoration: none;
    background: rgba(15, 23, 42, 0.55);
    border: 1px solid rgba(46, 216, 255, 0.35);
    border-radius: 18px;
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.25);
    transition: var(--transition-smooth);
}

.contact-qr-link:hover {
    transform: translateY(-5px);
    border-color: rgba(46, 216, 255, 0.6);
    box-shadow: 0 14px 30px rgba(46, 216, 255, 0.28);
}

.contact-qr-image {
    width: 180px;
    height: 180px;
    border-radius: 12px;
    background: #fff;
    padding: 8px;
}

.contact-qr-text {
    font-weight: 600;
    color: var(--light-text);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

.contact-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.contact-card {
    background: var(--gradient-card);
    border: 1px solid rgba(46, 216, 255, 0.2);
    padding: 35px 25px;
    border-radius: 15px;
    text-align: center;
    transition: var(--transition-smooth);
}

.contact-card:hover {
    transform: translateY(-10px);
    border-color: rgba(46, 216, 255, 0.5);
    box-shadow: 0 15px 40px rgba(46, 216, 255, 0.3);
}

.contact-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: #fff;
}

.contact-card h3 {
    font-size: 1.3rem;
    margin-bottom: 6px;
    color: var(--light-text);
}

.coordinator-club {
    color: var(--primary-color);
    font-weight: 700;
    margin-bottom: 14px;
}

.contact-name {
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.contact-card p {
    color: var(--gray-text);
    margin: 8px 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.faculty-list {
    list-style: none;
    margin: 6px 0 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.faculty-list li {
    color: var(--gray-text);
    margin: 6px 0;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.faculty-list li::before {
    content: '\25C6';
    color: var(--accent-color);
    font-size: 0.72rem;
    line-height: 1.8;
}

.contact-card i {
    color: var(--accent-color);
}

.social-links {
    text-align: center;
}

.social-links h4 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: var(--light-text);
}

.social-icons {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.social-icons a {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient-card);
    border: 1px solid rgba(46, 216, 255, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--light-text);
    font-size: 1.5rem;
    transition: var(--transition-smooth);
}

.social-icons a:hover {
    background: var(--gradient-primary);
    border-color: transparent;
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(46, 216, 255, 0.4);
}

/* ==========================================
   Footer
   ========================================== */

.footer {
    background: var(--darker-bg);
    padding: 40px 0;
    text-align: center;
    border-top: 1px solid rgba(46, 216, 255, 0.2);
}

.footer-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: #6cf7ff;
    text-shadow: 0 0 12px rgba(46, 216, 255, 0.35);
}

.footer-logo-img {
    width: 50px;
    height: 50px;
    object-fit: contain;
    filter: drop-shadow(0 2px 8px rgba(46, 216, 255, 0.3));
}

.footer-logo i {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer p {
    color: var(--gray-text);
    margin: 5px 0;
}

/* ==========================================
   Scroll to Top Button
   ========================================== */

.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient-primary);
    border: none;
    color: #fff;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
    z-index: 999;
    box-shadow: 0 5px 20px rgba(46, 216, 255, 0.4);
}

.scroll-top.show {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(46, 216, 255, 0.6);
}

/* ==========================================
   Animations
   ========================================== */

[data-aos] {
    opacity: 0;
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos].aos-animate {
    opacity: 1;
}

[data-aos="fade-up"] {
    transform: translateY(50px);
}

[data-aos="fade-up"].aos-animate {
    transform: translateY(0);
}

[data-aos="fade-right"] {
    transform: translateX(-50px);
}

[data-aos="fade-right"].aos-animate {
    transform: translateX(0);
}

[data-aos="fade-left"] {
    transform: translateX(50px);
}

[data-aos="fade-left"].aos-animate {
    transform: translateX(0);
}

[data-aos="zoom-in"] {
    transform: scale(0.8);
}

[data-aos="zoom-in"].aos-animate {
    transform: scale(1);
}

[data-aos="flip-up"] {
    transform: perspective(1000px) rotateX(45deg);
}

[data-aos="flip-up"].aos-animate {
    transform: perspective(1000px) rotateX(0);
}

/* ==========================================
   Responsive Design
   ========================================== */

@media (max-width: 968px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        background: rgba(15, 23, 42, 0.98);
        flex-direction: column;
        padding: 30px;
        gap: 15px;
        transition: var(--transition-smooth);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-tagline {
        font-size: 1.3rem;
    }
    
    .hero-details {
        flex-direction: column;
        gap: 15px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .timeline-item {
        grid-template-columns: 60px 1fr;
        gap: 20px;
    }
    
    .timeline-number {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    .timeline-item:not(:last-child)::after {
        left: 30px;
    }
}

@media (max-width: 640px) {
    :root {
        --section-padding: 50px 0;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-tagline {
        font-size: 1.1rem;
    }
    
    .detail-item {
        font-size: 0.95rem;
    }
    
    .btn-large {
        padding: 12px 30px;
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .registration-form {
        padding: 25px;
    }
    
    .prizes-grid,
    .details-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }
}