/* Home Page Styles */

/* Hero */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: var(--navbar-height);
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 50% 0%, rgba(255, 107, 43, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 50%, rgba(0, 102, 255, 0.1) 0%, transparent 40%),
        radial-gradient(ellipse at 20% 80%, rgba(139, 92, 246, 0.08) 0%, transparent 40%),
        linear-gradient(180deg, #050810 0%, #0a0e1a 50%, #050810 100%);
    z-index: 0;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 20%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 20%, transparent 70%);
}

.hero-particles {
    position: absolute;
    inset: 0;
    overflow: hidden;
    z-index: 1;
}

.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: var(--accent-cyan);
    border-radius: 50%;
    opacity: 0;
    animation: particleFloat 8s infinite;
}

@keyframes particleFloat {
    0% { opacity: 0; transform: translateY(100vh) scale(0); }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { opacity: 0; transform: translateY(-10vh) scale(1); }
}

.hero-solar-flare {
    position: absolute;
    top: -20%;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 107, 43, 0.2) 0%, rgba(255, 60, 60, 0.05) 40%, transparent 70%);
    animation: solarPulse 6s ease-in-out infinite;
    z-index: 1;
}

@keyframes solarPulse {
    0%, 100% { transform: translateX(-50%) scale(1); opacity: 0.6; }
    50% { transform: translateX(-50%) scale(1.1); opacity: 1; }
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 24px;
}

.hero-university {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.hero-department {
    font-size: 0.85rem;
    color: var(--accent-cyan);
    letter-spacing: 0.1em;
    margin-bottom: 32px;
}

.hero-title {
    margin-bottom: 24px;
}

.hero-title .ai-text {
    display: block;
    font-family: var(--font-heading);
    font-size: clamp(4rem, 12vw, 8rem);
    font-weight: 900;
    line-height: 0.9;
    background: var(--gradient-solar);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: none;
    filter: drop-shadow(0 0 40px rgba(255, 107, 43, 0.3));
}

.hero-title .extreme-text {
    display: block;
    font-family: var(--font-heading);
    font-size: clamp(2rem, 6vw, 4rem);
    font-weight: 700;
    letter-spacing: 0.3em;
    color: var(--text-primary);
    margin-top: -8px;
}

.hero-title .year-text {
    display: block;
    font-family: var(--font-heading);
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 600;
    color: var(--accent-cyan);
    letter-spacing: 0.5em;
    margin-top: 4px;
}

.hero-tagline {
    font-family: var(--font-heading);
    font-size: clamp(0.85rem, 2vw, 1.1rem);
    font-weight: 500;
    letter-spacing: 0.05em;
    color: var(--text-primary);
    max-width: 700px;
    margin: 0 auto 16px;
    line-height: 1.5;
}

.hero-description {
    color: var(--text-secondary);
    font-size: 1rem;
    max-width: 600px;
    margin: 0 auto 32px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

/* Event Date Card */
.event-date-card {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 40px;
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-glow);
    border-radius: var(--radius-md);
    animation: glow 3s ease-in-out infinite;
}

.event-date-card .date {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--accent-cyan);
}

.event-date-card .venue {
    font-size: 0.8rem;
    color: var(--text-secondary);
    letter-spacing: 0.1em;
    margin-top: 4px;
}

/* Countdown */
.countdown-section {
    padding: 60px 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
}

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

.countdown-label {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 24px;
}

.countdown {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.countdown-item {
    text-align: center;
    min-width: 90px;
}

.countdown-value {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    color: var(--accent-cyan);
    line-height: 1;
    display: block;
}

.countdown-unit {
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-top: 8px;
}

.countdown-live {
    font-family: var(--font-heading);
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 800;
    background: var(--gradient-solar);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: pulse 2s ease-in-out infinite;
}

/* Info Cards */
.info-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.info-card {
    text-align: center;
    padding: 32px 20px;
}

.info-card-icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

.info-card h3 {
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.info-card .value {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-cyan);
}

/* About */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-content p {
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.about-focus {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-top: 24px;
}

.focus-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.focus-item::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--accent-cyan);
    border-radius: 50%;
    flex-shrink: 0;
}

.about-visual {
    position: relative;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-orbit {
    width: 300px;
    height: 300px;
    border: 1px solid var(--border-glow);
    border-radius: 50%;
    position: relative;
    animation: float 6s ease-in-out infinite;
}

.about-orbit::before {
    content: 'AI';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: var(--font-heading);
    font-size: 4rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-orbit-ring {
    position: absolute;
    border: 1px solid rgba(0, 212, 255, 0.15);
    border-radius: 50%;
    animation: float 4s ease-in-out infinite reverse;
}

.about-orbit-ring:nth-child(1) { inset: -30px; }
.about-orbit-ring:nth-child(2) { inset: -60px; opacity: 0.5; }
.about-orbit-ring:nth-child(3) { inset: -90px; opacity: 0.25; }

/* Highlights */
.highlights-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.highlight-card {
    padding: 32px 24px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.highlight-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition);
}

.highlight-card:hover::before {
    opacity: 1;
}

.highlight-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid var(--border-glow);
    border-radius: 50%;
    font-size: 1.5rem;
}

.highlight-card h3 {
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    margin-bottom: 8px;
}

.highlight-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Problem Statements */
.problem-section {
    text-align: center;
}

.problem-locked {
    max-width: 600px;
    margin: 0 auto;
    padding: 60px 40px;
}

.lock-icon {
    font-size: 4rem;
    margin-bottom: 24px;
    opacity: 0.6;
}

.problem-locked h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    letter-spacing: 0.15em;
    margin-bottom: 12px;
}

.problem-locked p {
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.problem-release-date {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    color: var(--accent-orange);
    letter-spacing: 0.1em;
    margin-top: 16px;
}

.problem-countdown {
    margin-top: 24px;
}

.problems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 40px;
}

.problem-card {
    padding: 32px;
    text-align: left;
}

.problem-card .problem-icon {
    font-size: 2rem;
    margin-bottom: 16px;
}

.problem-card h3 {
    font-size: 1rem;
    margin-bottom: 8px;
}

.problem-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Timeline */
.timeline {
    display: flex;
    justify-content: center;
    gap: 0;
    position: relative;
    max-width: 800px;
    margin: 40px auto 0;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 10%;
    right: 10%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
}

.timeline-item {
    flex: 1;
    text-align: center;
    position: relative;
    padding: 0 16px;
}

.timeline-dot {
    width: 12px;
    height: 12px;
    background: var(--accent-cyan);
    border-radius: 50%;
    margin: 14px auto 16px;
    box-shadow: 0 0 12px rgba(0, 212, 255, 0.5);
    position: relative;
    z-index: 1;
}

.timeline-date {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--accent-cyan);
    letter-spacing: 0.1em;
}

.timeline-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 4px;
    letter-spacing: 0.05em;
}

/* Registration CTA */
.registration-cta {
    text-align: center;
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.registration-cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, rgba(0, 102, 255, 0.08) 0%, transparent 70%);
}

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

.cta-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    margin: 32px 0;
}

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

.cta-stat .number {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 800;
    color: var(--accent-cyan);
}

.cta-stat .label {
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-muted);
}

/* Poster Section */
.poster-section {
    text-align: center;
}

.poster-wrapper {
    max-width: 500px;
    margin: 32px auto;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-glow);
    box-shadow: var(--shadow-glow);
}

.poster-wrapper img {
    width: 100%;
}

/* Contact CTA */
.contact-cta {
    text-align: center;
    padding: 60px 0;
    background: var(--bg-secondary);
}