/* ======================================
   WiCE CTF 2025 - Modern CSS Styles
   Colors: Violet (#8b5cf6), Rose (#ec4899), Cyan (#06b6d4)
   ====================================== */

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

:root {
    /* Primary Colors */
    --primary: #8b5cf6;
    --secondary: #ec4899;
    --accent: #06b6d4;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
    --gradient-secondary: linear-gradient(135deg, #ec4899 0%, #06b6d4 100%);
    --gradient-accent: linear-gradient(135deg, #06b6d4 0%, #8b5cf6 100%);
    
    /* Neutral Colors */
    --dark: #1a1a2e;
    --dark-light: #2d2d44;
    --gray: #6b7280;
    --gray-light: #e5e7eb;
    --white: #ffffff;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Typography */
    --font-primary: 'Inter', sans-serif;
    --font-heading: 'Poppins', sans-serif;
    
    /* Transitions */
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--dark);
    background-color: var(--white);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

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

ul {
    list-style: none;
}

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

.section {
    padding: var(--spacing-xl) 0;
}

.section-alt {
    background: linear-gradient(135deg, #f9fafb 0%, #f3e8ff 100%);
}

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

.mt-40 {
    margin-top: 40px;
}

/* ======================================
   Buttons
   ====================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    border-radius: 50px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: 0 10px 30px rgba(139, 92, 246, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(139, 92, 246, 0.4);
}

.btn-secondary {
    background: var(--gradient-secondary);
    color: var(--white);
    box-shadow: 0 10px 30px rgba(236, 72, 153, 0.3);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(236, 72, 153, 0.4);
}

.btn-lg {
    padding: 1.125rem 2.5rem;
    font-size: 1.125rem;
}

.btn-sm {
    padding: 0.5rem 1.25rem;
    font-size: 0.875rem;
}

.btn-block {
    width: 100%;
}

/* ======================================
   Navigation
   ====================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: 0 2px 30px rgba(0, 0, 0, 0.1);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo i {
    font-size: 2rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
}

.menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--primary);
    border-radius: 3px;
    transition: var(--transition);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    font-weight: 500;
    color: var(--dark);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* ======================================
   Hero Section
   ====================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f9fafb 0%, #fce7f3 50%, #ddd6fe 100%);
    padding-top: 80px;
    overflow: hidden;
}

.particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.5rem;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary);
    box-shadow: 0 4px 20px rgba(139, 92, 246, 0.2);
    margin-bottom: 2rem;
    animation: fadeInDown 0.8s ease;
}

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

.hero-title {
    font-size: 4rem;
    margin-bottom: 1rem;
    animation: fadeInUp 0.8s ease 0.2s both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.hero-subtitle {
    font-size: 1.75rem;
    color: var(--dark);
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.highlight {
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--gray);
    line-height: 1.8;
    margin-bottom: 3rem;
    animation: fadeInUp 0.8s ease 0.6s both;
}

/* Countdown Timer */
.countdown {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 3rem;
    animation: fadeInUp 0.8s ease 0.8s both;
}

.countdown-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    min-width: 100px;
}

.countdown-value {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.countdown-label {
    font-size: 0.875rem;
    color: var(--gray);
    margin-top: 0.5rem;
    font-weight: 600;
}

.hero-cta {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 3rem;
    animation: fadeInUp 0.8s ease 1s both;
}

.hero-info {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 1.2s both;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--dark);
}

.info-item i {
    color: var(--primary);
    font-size: 1.25rem;
}

.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    overflow: hidden;
    line-height: 0;
}

.hero-wave svg {
    position: relative;
    display: block;
    width: calc(100% + 1.3px);
    height: 80px;
    fill: var(--white);
}

/* ======================================
   Section Headers
   ====================================== */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-badge {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1), rgba(236, 72, 153, 0.1));
    color: var(--primary);
    font-weight: 700;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 50px;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--gray);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

/* ======================================
   About Section
   ====================================== */
.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.about-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.about-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(139, 92, 246, 0.15);
}

.card-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: 20px;
    font-size: 2rem;
    color: var(--white);
}

.about-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

.about-card p {
    color: var(--gray);
    line-height: 1.8;
}

/* ======================================
   Program Timeline Section
   ====================================== */
.program-timeline {
    max-width: 900px;
    margin: 0 auto;
}

.timeline-item {
    display: flex;
    gap: 2rem;
    margin-bottom: 3rem;
    position: relative;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 39px;
    top: 80px;
    width: 2px;
    height: calc(100% + 20px);
    background: linear-gradient(180deg, var(--primary), var(--secondary));
}

.timeline-item:last-child::before {
    display: none;
}

.timeline-icon {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: 20px;
    font-size: 2rem;
    color: var(--white);
    box-shadow: 0 10px 30px rgba(139, 92, 246, 0.3);
}

.timeline-content {
    flex: 1;
    background: var(--white);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
}

.timeline-badge {
    display: inline-block;
    padding: 0.25rem 1rem;
    background: var(--gradient-secondary);
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    border-radius: 50px;
    margin-bottom: 1rem;
}

.timeline-content h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

.timeline-list {
    list-style: none;
}

.timeline-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    color: var(--gray);
    margin-bottom: 0.75rem;
}

.timeline-list i {
    color: var(--primary);
    margin-top: 0.25rem;
}

/* ======================================
   Details Section
   ====================================== */
.details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.detail-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.detail-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 50px rgba(139, 92, 246, 0.15);
}

.detail-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: 15px;
    font-size: 1.75rem;
    color: var(--white);
}

.detail-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--dark);
}

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

/* Challenges Section */
.challenges-section {
    margin-top: 4rem;
}

.challenges-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
    color: var(--dark);
}

.challenges-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.challenge-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.challenge-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 60px rgba(236, 72, 153, 0.2);
}

.challenge-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-secondary);
    border-radius: 15px;
    font-size: 1.75rem;
    color: var(--white);
}

.challenge-card h4 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--dark);
}

.challenge-card p {
    color: var(--gray);
    font-size: 0.9rem;
}

/* Modalities Section */
.modalities-section {
    margin-top: 4rem;
}

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

.modality-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
}

.modality-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-accent);
    border-radius: 15px;
    font-size: 1.5rem;
    color: var(--white);
    margin-bottom: 1.5rem;
}

.modality-card h4 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

.modality-card ul {
    list-style: none;
}

.modality-card li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    color: var(--gray);
    margin-bottom: 0.75rem;
}

.modality-card li i {
    color: var(--primary);
    margin-top: 0.25rem;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 3rem;
}

/* ======================================
   Benefits Section
   ====================================== */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.benefit-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.benefit-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(6, 182, 212, 0.2);
}

.benefit-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-accent);
    border-radius: 15px;
    font-size: 1.75rem;
    color: var(--white);
}

.benefit-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--dark);
}

.benefit-card p {
    color: var(--gray);
    line-height: 1.8;
}

/* ======================================
   Participate Section
   ====================================== */
.participate-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.participate-card {
    background: var(--white);
    padding: 3rem;
    border-radius: 30px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.08);
    position: relative;
    transition: var(--transition);
}

.participate-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 30px 80px rgba(139, 92, 246, 0.2);
}

.participate-badge {
    position: absolute;
    top: -15px;
    right: 30px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.25rem;
    background: var(--gradient-primary);
    color: var(--white);
    font-size: 0.875rem;
    font-weight: 700;
    border-radius: 50px;
    box-shadow: 0 10px 30px rgba(139, 92, 246, 0.3);
}

.participate-badge.popular {
    background: var(--gradient-secondary);
    box-shadow: 0 10px 30px rgba(236, 72, 153, 0.3);
}

.participate-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: 20px;
    font-size: 2rem;
    color: var(--white);
    margin-bottom: 2rem;
}

.participate-card h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

.participate-description {
    color: var(--gray);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.participate-features {
    list-style: none;
    margin-bottom: 2rem;
}

.participate-features li {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
    color: var(--gray);
}

.participate-features i {
    color: var(--primary);
    font-size: 1.25rem;
    margin-top: 0.15rem;
}

.participate-note {
    max-width: 900px;
    margin: 3rem auto 0;
    padding: 2rem;
    background: rgba(139, 92, 246, 0.05);
    border-left: 4px solid var(--primary);
    border-radius: 10px;
    display: flex;
    gap: 1rem;
}

.participate-note i {
    color: var(--primary);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.participate-note p {
    color: var(--gray);
    line-height: 1.8;
}

/* ======================================
   Inspiration Section
   ====================================== */
.inspiration {
    background: var(--gradient-primary);
    color: var(--white);
}

.inspiration-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.quote-icon {
    font-size: 4rem;
    opacity: 0.3;
    margin-bottom: 2rem;
}

.inspiration-quote {
    font-size: 1.75rem;
    line-height: 1.8;
    font-style: italic;
    margin-bottom: 3rem;
}

.inspiration-author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
}

.author-avatar {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

.author-info {
    text-align: left;
}

.author-name {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.author-title {
    opacity: 0.9;
}

/* ======================================
   Partners Section
   ====================================== */
.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.partner-card {
    background: var(--white);
    padding: 3rem 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.partner-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.1);
}

.partner-logo {
    width: 100px;
    height: 100px;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-light);
    border-radius: 15px;
    font-size: 3rem;
    color: var(--gray);
}

.partner-card p {
    font-weight: 600;
    color: var(--dark);
}

.partners-cta {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1), rgba(236, 72, 153, 0.1));
    padding: 3rem;
    border-radius: 30px;
    text-align: center;
}

.partners-cta h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

.partners-cta p {
    color: var(--gray);
    margin-bottom: 2rem;
}

/* ======================================
   FAQ Section
   ====================================== */
.faq-container {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    border-radius: 15px;
    margin-bottom: 1.5rem;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem 2rem;
    cursor: pointer;
    background: var(--white);
    transition: var(--transition);
}

.faq-question:hover {
    background: rgba(139, 92, 246, 0.05);
}

.faq-question h3 {
    font-size: 1.125rem;
    color: var(--dark);
    margin: 0;
}

.faq-question i {
    color: var(--primary);
    font-size: 1.25rem;
    transition: var(--transition);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 2rem 1.5rem;
    color: var(--gray);
    line-height: 1.8;
}

/* ======================================
   Contact Section
   ====================================== */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.contact-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 50px rgba(139, 92, 246, 0.15);
}

.contact-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-accent);
    border-radius: 15px;
    font-size: 1.75rem;
    color: var(--white);
}

.contact-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--dark);
}

.contact-card p {
    color: var(--gray);
    margin-bottom: 0.5rem;
}

.contact-card a {
    color: var(--primary);
    font-weight: 600;
}

.contact-card a:hover {
    color: var(--secondary);
}

.contact-detail {
    font-size: 0.875rem;
    color: var(--gray);
}

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

.contact-social h3 {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: var(--dark);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

.social-link {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: 15px;
    font-size: 1.5rem;
    transition: var(--transition);
}

.social-link:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(139, 92, 246, 0.3);
}

/* ======================================
   Footer
   ====================================== */
.footer {
    background: var(--dark);
    color: var(--white);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.footer-logo i {
    font-size: 2rem;
    color: var(--primary);
}

.footer-section p {
    color: var(--gray-light);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.footer-section h4 {
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
    color: var(--white);
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--gray-light);
}

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

.footer-contact li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    color: var(--gray-light);
}

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

.footer-cta {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: var(--gray-light);
    margin-bottom: 0.5rem;
}

.footer-bottom i {
    color: var(--secondary);
}

/* ======================================
   Back to Top Button
   ====================================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: var(--white);
    border: none;
    border-radius: 50%;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: 0 5px 20px rgba(139, 92, 246, 0.4);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(139, 92, 246, 0.5);
}

/* ======================================
   Responsive Design
   ====================================== */
@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        align-items: center;
        padding: 3rem 0;
        transition: var(--transition);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .countdown {
        gap: 1rem;
    }
    
    .countdown-item {
        min-width: 70px;
        padding: 1rem;
    }
    
    .countdown-value {
        font-size: 1.75rem;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: stretch;
    }
    
    .hero-info {
        gap: 1.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .timeline-item {
        flex-direction: column;
        gap: 1rem;
    }
    
    .timeline-item::before {
        display: none;
    }
    
    .participate-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .countdown {
        gap: 0.5rem;
    }
    
    .countdown-item {
        min-width: 60px;
        padding: 0.75rem;
    }
    
    .countdown-value {
        font-size: 1.5rem;
    }
    
    .countdown-label {
        font-size: 0.75rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .btn-lg {
        padding: 1rem 1.5rem;
        font-size: 1rem;
    }
}