:root {
    --primary-color: #12355b;
    --secondary-color: #1d5f8c;
    --accent-color: #c48a3a;
    --bg-color: #f5f2eb;
    --section-color: #fbfaf7;
    --card-bg: rgba(255, 255, 255, 0.92);
    --text-color: #213040;
    --heading-color: #102033;
    --text-secondary: #526172;
    --border-color: rgba(16, 32, 51, 0.1);
    --shadow-soft: 0 20px 45px rgba(16, 32, 51, 0.08);
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Outfit', sans-serif;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background:
        radial-gradient(circle at top left, rgba(196, 138, 58, 0.12), transparent 28%),
        linear-gradient(180deg, #f7f4ee 0%, #f2efe8 100%);
    color: var(--text-color);
    line-height: 1.65;
    overflow-x: hidden;
}

h1,
h2,
h3 {
    font-family: var(--font-heading);
    color: var(--heading-color);
}

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

ul {
    list-style: none;
}

.container {
    width: min(1180px, calc(100% - 40px));
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 24px;
}

.section-header h2 {
    font-size: clamp(2.3rem, 4vw, 3.4rem);
}

.underline {
    width: 72px;
    height: 3px;
    margin: 12px auto 0;
    background: linear-gradient(90deg, var(--secondary-color), var(--accent-color));
}

.section-intro {
    max-width: 760px;
    margin: 0 auto 48px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.05rem;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 18px 0;
    background: rgba(247, 244, 238, 0.86);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}

.header.scrolled {
    padding: 12px 0;
    background: rgba(247, 244, 238, 0.95);
    border-bottom-color: var(--border-color);
    box-shadow: 0 8px 24px rgba(16, 32, 51, 0.06);
}

.nav {
    width: min(1180px, calc(100% - 40px));
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.logo {
    font-family: var(--font-body);
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: 0.04em;
}

.logo span {
    color: var(--accent-color);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav-links a {
    font-size: 0.98rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.nav-links a:hover {
    color: var(--secondary-color);
}

.btn-nav {
    padding: 10px 18px;
    border-radius: 999px;
    border: 1px solid rgba(29, 95, 140, 0.22);
    background: rgba(255, 255, 255, 0.72);
}

.btn-nav:hover {
    background: var(--secondary-color);
    color: #fff;
    border-color: var(--secondary-color);
}

.hero {
    position: relative;
    min-height: 75vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
}

.hero-bg,
.hero-bg img,
.overlay {
    position: absolute;
    inset: 0;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: saturate(0.75) brightness(0.82);
    transform: scale(1.06);
}

.overlay {
    background:
        linear-gradient(180deg, rgba(247, 244, 238, 0.16) 0%, rgba(247, 244, 238, 0.82) 70%, #f7f4ee 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 880px;
    padding: 140px 20px 80px;
}

.eyebrow {
    display: inline-block;
    margin-bottom: 18px;
    padding: 8px 14px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(29, 95, 140, 0.16);
    color: var(--secondary-color);
    font-size: 0.92rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.hero-title {
    font-size: clamp(3.4rem, 9vw, 6.1rem);
    line-height: 0.98;
    margin-bottom: 18px;
}

.gradient-text {
    background: linear-gradient(120deg, var(--secondary-color), var(--accent-color));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: clamp(1.35rem, 3vw, 1.75rem);
    margin-bottom: 12px;
}

.hero-organizers {
    max-width: 720px;
    margin: 0 auto 28px;
    color: var(--text-secondary);
    font-size: 1.08rem;
}

.hero-meta {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 14px;
    margin-bottom: 34px;
}

.meta-item {
    padding: 10px 14px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(16, 32, 51, 0.08);
    color: var(--text-secondary);
    font-size: 0.96rem;
}

.btn,
.participant-link,
.btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: 999px;
    font-weight: 600;
}

.btn {
    padding: 15px 28px;
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    color: #fff;
    box-shadow: 0 18px 30px rgba(18, 53, 91, 0.18);
}

.btn:hover,
.participant-link:hover,
.btn-outline:hover {
    transform: translateY(-2px);
}

.about,
.participants,
.schedule {
    padding: 100px 0;
}

.about-content {
    max-width: 820px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.15rem;
}

.about-content p + p {
    margin-top: 18px;
}

.location {
    position: relative;
}

.location-image-container {
    position: relative;
    min-height: 620px;
}

.location-image-container img {
    width: 100%;
    height: 100%;
    min-height: 620px;
    object-fit: cover;
}

.location-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 30px;
    background: linear-gradient(180deg, rgba(16, 32, 51, 0.18) 0%, rgba(16, 32, 51, 0.48) 100%);
}

.location-text {
    max-width: 760px;
    padding: 42px;
    border-radius: 28px;
    background: rgba(252, 250, 247, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.58);
    box-shadow: var(--shadow-soft);
    text-align: center;
}

.location-text h3 {
    font-size: clamp(2.1rem, 5vw, 3.2rem);
    margin-bottom: 18px;
}

.location-desc,
.location-vibe {
    color: var(--text-secondary);
}

.location-desc {
    margin-bottom: 18px;
    font-size: 1.08rem;
}

.location-vibe {
    margin-bottom: 26px;
    font-size: 1rem;
}

.btn-outline {
    padding: 13px 24px;
    border: 1px solid rgba(29, 95, 140, 0.22);
    background: rgba(255, 255, 255, 0.75);
    color: var(--secondary-color);
}

.participants {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.34) 0%, rgba(255, 255, 255, 0.82) 100%);
}

.participants-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
}

.participant-card {
    padding: 24px;
    border-radius: 24px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-soft);
}

.participant-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 12px;
}

.participant-top h3 {
    font-size: 1.6rem;
    line-height: 1.1;
}

.attendance {
    flex-shrink: 0;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(196, 138, 58, 0.14);
    color: #8b5e1f;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.institution {
    min-height: 3.3em;
    margin-bottom: 18px;
    color: var(--text-secondary);
}

.participant-link {
    padding: 11px 18px;
    border: 1px solid rgba(29, 95, 140, 0.18);
    background: rgba(29, 95, 140, 0.08);
    color: var(--secondary-color);
}

.schedule-list {
    display: grid;
    gap: 24px;
}

.schedule-day {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 24px;
    padding: 28px;
    border-radius: 28px;
    background: rgba(255, 255, 255, 0.88);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-soft);
}

.schedule-date {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding-right: 14px;
    border-right: 1px solid rgba(16, 32, 51, 0.08);
}

.day-label {
    font-family: var(--font-heading);
    font-size: 2rem;
    color: var(--heading-color);
}

.day-subtitle {
    color: var(--secondary-color);
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.schedule-events {
    display: grid;
    gap: 14px;
}

.event-row {
    display: grid;
    grid-template-columns: 130px 1fr;
    gap: 18px;
    align-items: start;
    padding-bottom: 14px;
    border-bottom: 1px solid rgba(16, 32, 51, 0.06);
}

.event-row:last-child {
    border-bottom: 0;
    padding-bottom: 0;
}

.event-time {
    font-weight: 700;
    color: var(--secondary-color);
}

.event-details p {
    color: var(--text-color);
}

footer {
    padding: 34px 0 46px;
    border-top: 1px solid rgba(16, 32, 51, 0.08);
    background: rgba(255, 255, 255, 0.5);
}

.footer-content {
    text-align: center;
    color: var(--text-secondary);
}

.footer-content p + p {
    margin-top: 6px;
}

.reveal,
.fade-in-up {
    opacity: 0;
    transform: translateY(24px);
}

.visible {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.delay-1 {
    transition-delay: 0.1s;
}

.delay-2 {
    transition-delay: 0.2s;
}

.delay-3 {
    transition-delay: 0.3s;
}

@media (max-width: 960px) {
    .participants-grid {
        grid-template-columns: 1fr;
    }

    .schedule-day {
        grid-template-columns: 1fr;
    }

    .schedule-date {
        border-right: 0;
        border-bottom: 1px solid rgba(16, 32, 51, 0.08);
        padding-right: 0;
        padding-bottom: 16px;
    }
}

@media (max-width: 760px) {
    .header {
        position: static;
    }

    .nav {
        flex-direction: column;
    }

    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 14px 20px;
    }

    .hero {
        min-height: auto;
    }

    .hero-content {
        padding: 80px 20px 64px;
    }

    .about,
    .participants,
    .schedule {
        padding: 76px 0;
    }

    .location-image-container,
    .location-image-container img {
        min-height: 720px;
    }

    .location-text {
        padding: 28px 22px;
    }

    .participant-top {
        flex-direction: column;
    }

    .event-row {
        grid-template-columns: 1fr;
        gap: 6px;
    }
}