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

:root {
    --navy-950: #050d1a;
    --navy-900: #0a1628;
    --navy-800: #0f2342;
    --navy-700: #163560;
    --navy-600: #1e4976;
    --navy-500: #2563a8;
    --navy-400: #3b82c4;
    --navy-300: #6ba3d9;
    --gold: #c9a227;
    --gold-light: #e8c547;
    --white: #ffffff;
    --text-main: #f1f5f9;
    --text-muted: #94a3b8;
    --text-subtle: #64748b;
    --glass: rgba(15, 35, 66, 0.55);
    --glass-border: rgba(107, 163, 217, 0.15);
    --glass-hover: rgba(30, 73, 118, 0.45);
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-pill: 999px;
    --shadow: 0 24px 48px -12px rgba(0, 0, 0, 0.45);
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'DM Sans', sans-serif;
    background: var(--navy-950);
    color: var(--text-main);
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
}

.bg-layer {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
}

.bg-gradient {
    background:
        radial-gradient(ellipse 80% 60% at 50% -10%, rgba(37, 99, 168, 0.35), transparent),
        radial-gradient(ellipse 50% 40% at 100% 50%, rgba(30, 73, 118, 0.25), transparent),
        radial-gradient(ellipse 40% 30% at 0% 80%, rgba(201, 162, 39, 0.08), transparent),
        linear-gradient(180deg, var(--navy-950) 0%, var(--navy-900) 50%, var(--navy-950) 100%);
}

.bg-grid {
    background-image:
        linear-gradient(rgba(107, 163, 217, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(107, 163, 217, 0.04) 1px, transparent 1px);
    background-size: 64px 64px;
    mask-image: linear-gradient(to bottom, black 0%, transparent 85%);
}

/* Nav */
.nav {
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    background: rgba(5, 13, 26, 0.75);
    border-bottom: 1px solid var(--glass-border);
}

.nav-inner {
    max-width: 960px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    height: 36px;
    width: auto;
    filter: brightness(0) invert(1);
    opacity: 0.9;
}

.nav-link {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-muted);
    text-decoration: none;
    transition: color var(--transition);
}

.nav-link:hover {
    color: var(--gold-light);
}

/* Hero */
.hero {
    max-width: 960px;
    margin: 0 auto;
    padding: 2rem 1.5rem 3rem;
    text-align: center;
}

.hero-banner {
    width: 100%;
    height: auto;
    display: block;
    margin: 0 auto 1.75rem;
    border-radius: var(--radius-md);
}

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

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.125rem);
    color: var(--text-muted);
    max-width: 540px;
    margin: 0 auto 0.5rem;
    line-height: 1.7;
}

/* Events */
.events {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 1.5rem 5rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.section-label {
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-subtle);
    margin-bottom: 0.25rem;
    padding-left: 0.25rem;
}

/* Event Card */
.event-card {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 1.5rem;
    align-items: center;
    transition: border-color var(--transition), background var(--transition), transform var(--transition);
    animation: fadeUp 0.6s ease both;
}

.event-card:hover {
    background: var(--glass-hover);
    border-color: rgba(107, 163, 217, 0.3);
    transform: translateY(-2px);
}

.event-card:nth-child(2) { animation-delay: 0.05s; }
.event-card:nth-child(3) { animation-delay: 0.1s; }
.event-card:nth-child(4) { animation-delay: 0.15s; }
.event-card:nth-child(5) { animation-delay: 0.2s; }
.event-card:nth-child(6) { animation-delay: 0.25s; }

.event-card--disabled {
    opacity: 0.65;
}

.event-card--disabled:hover {
    transform: none;
    background: var(--glass);
    border-color: var(--glass-border);
}

.event-content {
    min-width: 0;
}

.event-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem 1rem;
    margin-bottom: 0.625rem;
}

.event-year {
    font-family: 'Plus Jakarta Sans', 'DM Sans', sans-serif;
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--navy-300);
}

.event-date {
    font-size: 0.8125rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

.event-date i {
    color: var(--gold);
    font-size: 0.75rem;
}

.event-title {
    font-family: 'Plus Jakarta Sans', 'DM Sans', sans-serif;
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
    font-weight: 600;
    line-height: 1.35;
    letter-spacing: -0.015em;
    margin-bottom: 1rem;
    color: var(--white);
}

/* Highlights grid (2x2) */
.highlights-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.625rem;
}

.highlight-item {
    display: flex;
    align-items: flex-start;
    gap: 0.625rem;
    background: rgba(5, 13, 26, 0.4);
    border: 1px solid rgba(107, 163, 217, 0.1);
    border-radius: var(--radius-sm);
    padding: 0.75rem;
}

.highlight-icon {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    background: rgba(37, 99, 168, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--navy-300);
    font-size: 0.75rem;
}

.highlight-text {
    font-size: 0.8125rem;
    color: var(--text-muted);
    line-height: 1.45;
}

.highlight-text strong {
    display: block;
    color: var(--text-main);
    font-weight: 500;
    font-size: 0.8125rem;
}

/* About row (image + text) */
.about-row {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.about-visual {
    width: 72px;
    height: 72px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--navy-700), var(--navy-600));
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--gold-light);
    font-size: 1.75rem;
}

.about-lines {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
    flex: 1;
}

.about-line {
    font-size: 0.875rem;
    color: var(--text-muted);
    padding-left: 0.75rem;
    border-left: 2px solid rgba(107, 163, 217, 0.25);
}

/* Speakers row */
.speakers-row {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.speaker-item {
    display: flex;
    align-items: center;
    gap: 0.875rem;
}

.speaker-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--navy-600), var(--navy-500));
    border: 2px solid rgba(107, 163, 217, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--navy-300);
    font-size: 0.875rem;
}

.speaker-info {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.speaker-info strong {
    display: block;
    color: var(--text-main);
    font-weight: 500;
}

/* Simple description */
.event-desc {
    font-size: 0.875rem;
    color: var(--text-muted);
    line-height: 1.65;
    max-width: 520px;
}

/* CTA Button */
.event-cta {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}

.btn-play {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--gold) 0%, var(--gold-light) 100%);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--navy-900);
    font-size: 1.375rem;
    text-decoration: none;
    box-shadow: 0 8px 24px rgba(201, 162, 39, 0.3);
    transition: transform var(--transition), box-shadow var(--transition);
}

.btn-play:hover {
    transform: scale(1.06);
    box-shadow: 0 12px 32px rgba(201, 162, 39, 0.4);
}

.btn-play:active {
    transform: scale(0.98);
}

.btn-play--disabled {
    background: rgba(100, 116, 139, 0.3);
    color: var(--text-subtle);
    box-shadow: none;
    cursor: not-allowed;
    pointer-events: none;
}

.cta-label {
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-subtle);
    text-align: center;
    max-width: 80px;
}

.cta-label--active {
    color: var(--gold-light);
}

/* Footer */
.footer {
    max-width: 960px;
    margin: 0 auto;
    padding: 2rem 1.5rem 3rem;
    border-top: 1px solid var(--glass-border);
    text-align: center;
}

.footer-logo {
    height: 28px;
    filter: brightness(0) invert(1);
    opacity: 0.5;
    margin-bottom: 0.75rem;
}

.footer-text {
    font-size: 0.8125rem;
    color: var(--text-subtle);
    margin-bottom: 1rem;
}

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

.footer-links a {
    font-size: 0.8125rem;
    color: var(--text-muted);
    text-decoration: none;
    transition: color var(--transition);
}

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

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

@media (max-width: 720px) {
    .event-card {
        grid-template-columns: 1fr;
        padding: 1.5rem;
    }

    .event-cta {
        flex-direction: row;
        justify-content: flex-start;
        align-items: center;
    }

    .cta-label {
        max-width: none;
        text-align: left;
    }

    .highlights-grid {
        grid-template-columns: 1fr;
    }

    .hero {
        padding-top: 2.5rem;
    }
}

@media (max-width: 400px) {
    .about-row {
        flex-direction: column;
    }

    .about-visual {
        width: 100%;
        height: 56px;
    }
}