:root {
    --bg: #0b0f14;
    --bg-2: #111720;
    --card: #141b24;
    --text: #e8edf2;
    --muted: #aab4bf;
    --accent: #c9a86a;
    --accent-2: #7fb7ff;
    --border: #223041;
    --shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
    --radius: 18px;
    --tg-safe-area-inset-top: 0px;
    --tg-safe-area-inset-right: 0px;
    --tg-safe-area-inset-bottom: 0px;
    --tg-safe-area-inset-left: 0px;
    --tg-content-safe-area-inset-top: 0px;
    --tg-content-safe-area-inset-right: 0px;
    --tg-content-safe-area-inset-bottom: 0px;
    --tg-content-safe-area-inset-left: 0px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    background: radial-gradient(1200px 600px at 80% -10%, rgba(201, 168, 106, 0.12), transparent 55%),
    radial-gradient(900px 600px at 10% 20%, rgba(127, 183, 255, 0.10), transparent 55%),
    var(--bg);
    color: var(--text);
    line-height: 1.6;
}

body.telegram-mini-app {
    --app-safe-top: calc(
            var(--tg-safe-area-inset-top, env(safe-area-inset-top, 0px)) +
            var(--tg-content-safe-area-inset-top, 0px)
    );
    --app-safe-right: calc(
            var(--tg-safe-area-inset-right, env(safe-area-inset-right, 0px)) +
            var(--tg-content-safe-area-inset-right, 0px)
    );
    --app-safe-bottom: calc(
            var(--tg-safe-area-inset-bottom, env(safe-area-inset-bottom, 0px)) +
            var(--tg-content-safe-area-inset-bottom, 0px)
    );
    --app-safe-left: calc(
            var(--tg-safe-area-inset-left, env(safe-area-inset-left, 0px)) +
            var(--tg-content-safe-area-inset-left, 0px)
    );
}

body.telegram-mini-app #app {
    min-height: calc(100vh - var(--app-safe-top) - var(--app-safe-bottom));
    padding-top: var(--app-safe-top);
    padding-right: var(--app-safe-right);
    padding-bottom: var(--app-safe-bottom);
    padding-left: var(--app-safe-left);
}

a {
    color: inherit;
    text-decoration: none;
}

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

.container {
    width: min(1160px, 92vw);
    margin: 0 auto;
}

#app {
    background: rgba(10, 14, 20, 0.85);
}

.nav {
    /*position: sticky;*/
    /*top: 0;*/
    /*z-index: 50;*/
    backdrop-filter: blur(10px);
    background: rgba(10, 14, 20, 0.85);
    border-bottom: 1px solid rgba(34, 48, 65, 0.6);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 14px 0;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
    letter-spacing: 0.4px;
}

.brand img {
    width: 64px;
    height: auto;
    border-radius: 50%;
    border: 2px solid rgba(201, 168, 106, 0.5);
}

.nav-links {
    display: flex;
    gap: 18px;
    font-size: 14px;
    color: var(--muted);
}

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

.btn {
    padding: 12px 22px;
    border-radius: 999px;
    border: 1px solid transparent;
    font-weight: 600;
    letter-spacing: 0.3px;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.btn:focus-visible {
    outline: 2px solid var(--accent-2);
    outline-offset: 3px;
}

.btn-primary {
    background: linear-gradient(135deg, rgba(201, 168, 106, 0.22), rgba(201, 168, 106, 0.08));
    color: var(--text);
    border-color: rgba(201, 168, 106, 0.5);
    box-shadow: 0 10px 24px rgba(201, 168, 106, 0.15);
}

.btn-secondary {
    background: rgba(20, 27, 36, 0.6);
    border-color: rgba(127, 183, 255, 0.35);
    color: var(--text);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.35);
}

.hero {
    padding: 80px 0 60px;
    position: relative;
    overflow: hidden;
}

.hero-pattern {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background: radial-gradient(600px 400px at 20% 10%, rgba(127, 183, 255, 0.12), transparent 60%),
    radial-gradient(800px 500px at 85% 25%, rgba(201, 168, 106, 0.15), transparent 60%),
    linear-gradient(120deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0) 60%),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.03) 0 1px, transparent 1px 70px),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.02) 0 1px, transparent 1px 70px);
    opacity: 0.65;
}

.hero-content {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 40px;
    align-items: center;
}

.hero h1 {
    font-size: clamp(32px, 4vw, 52px);
    margin: 0 0 12px;
    line-height: 1.2;
    letter-spacing: 0.3px;
}

.hero p {
    color: var(--muted);
    margin: 0 0 26px;
    font-size: 18px;
}

.hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 14px 24px;
    font-size: 15px;
    color: var(--text);
    margin-bottom: 22px;
}

.hero-meta span {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--muted);
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-bottom: 16px;
}

.calendar-links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 10px;
}

.btn-calendar {
    background: rgba(20, 27, 36, 0.55);
    border-color: rgba(34, 48, 65, 0.9);
    color: var(--muted);
    font-size: 13px;
    padding: 10px 16px;
}

.btn-calendar:hover {
    color: var(--text);
}

.hero-note {
    color: var(--muted);
    font-size: 14px;
}

.hero-card {
    background: rgba(20, 27, 36, 0.75);
    border: 1px solid rgba(34, 48, 65, 0.6);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
}

.hero-card h3 {
    margin: 0 0 10px;
    font-size: 18px;
}

.hero-card ul {
    margin: 0;
    padding-left: 18px;
    color: var(--muted);
}

section {
    padding: 70px 0;
}

.section-title {
    font-size: clamp(24px, 3vw, 36px);
    margin: 0 0 18px;
}

.section-subtitle {
    color: var(--muted);
    margin-bottom: 30px;
}

.grid {
    display: grid;
    gap: 20px;
}

.grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card {
    background: var(--card);
    border: 1px solid rgba(34, 48, 65, 0.8);
    border-radius: var(--radius);
    padding: 22px;
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
}

.card h4 {
    margin: 0 0 10px;
    font-size: 18px;
}

.card p {
    margin: 0;
    color: var(--muted);
}

.topic-list {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}

.topic-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 16px;
    border-radius: 14px;
    background: rgba(20, 27, 36, 0.7);
    border: 1px solid rgba(34, 48, 65, 0.7);
    color: var(--muted);
    font-size: 14px;
}

.topic-item span {
    font-size: 18px;
    color: var(--accent);
}

.timeline {
    display: grid;
    gap: 18px;
}

.timeline-item {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 20px;
    padding: 18px 22px;
    border-radius: var(--radius);
    border: 1px solid rgba(34, 48, 65, 0.8);
    background: rgba(20, 27, 36, 0.65);
}

.time {
    color: var(--accent);
    font-weight: 600;
}

.timeline-item h4 {
    margin: 0 0 8px;
    font-size: 18px;
}

.timeline-item p {
    margin: 0;
    color: var(--muted);
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 8px;
    border-radius: 999px;
    border: 1px solid rgba(127, 183, 255, 0.4);
    color: var(--accent-2);
    font-size: 10px;
    letter-spacing: 0.3px;
}

.speakers-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
}

.speaker-card {
    background: rgba(20, 27, 36, 0.75);
    border: 1px solid rgba(34, 48, 65, 0.8);
    border-radius: var(--radius);
    padding: 20px;
    display: grid;
    gap: 14px;
}

.speaker-photo {
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid rgba(34, 48, 65, 0.8);
    font-size: 0;
    position: relative;
    aspect-ratio: 1 / 1;
}

.speaker-photo img,
.speaker-photo video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.speaker-photo video {
    opacity: 0;
    transition: opacity 0.45s ease;
}

.speaker-photo.is-ready video {
    opacity: 1;
}

.speaker-photo.is-ready img {
    opacity: 0;
}

.business-card {
    gap: 16px;
}

.business-photo {
    border-radius: 14px;
    overflow: hidden;
    border: 1px solid rgba(34, 48, 65, 0.8);
}

.business-photo img {
    width: 100%;
    height: auto;
    display: block;
}

.direction-card {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid rgba(34, 48, 65, 0.8);
    background: rgba(20, 27, 36, 0.75);
    min-height: 260px;
    display: block;
}

.direction-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.65;
}

.direction-overlay {
    position: absolute;
    inset: 0;
    padding: 22px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    background: linear-gradient(180deg, rgba(12, 16, 22, 0.2), rgba(12, 16, 22, 0.85));
}

.direction-overlay h3 {
    margin: 0 0 8px;
    font-size: 20px;
}

.direction-overlay p {
    margin: 0;
    color: var(--muted);
    font-size: 14px;
}

.event-card {
    background: var(--card);
    border: 1px solid rgba(34, 48, 65, 0.8);
    border-radius: var(--radius);
    padding: 20px;
    display: grid;
    gap: 12px;
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
}

.event-card.leave {
    background-color: rgb(20, 27, 36, 0.3);
    border: 1px solid rgba(34, 48, 65, 0.3);
}

.event-card h3 {
    margin: 0;
    font-size: 18px;
}

.event-card p {
    margin: 0;
    color: var(--muted);
    font-size: 14px;
}

.event-date {
    font-size: 12px;
    letter-spacing: 0.3px;
    color: var(--accent);
    text-transform: uppercase;
}

.event-place {
    font-size: 13px;
    color: var(--muted);
}

.event-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 6px;
}

.secret-card {
    background: rgba(20, 27, 36, 0.65);
    border: 1px solid rgba(34, 48, 65, 0.8);
    box-shadow: var(--shadow);
}

.speaker-meta h4 {
    margin: 0 0 6px;
    font-size: 18px;
}

.speaker-meta p {
    margin: 0;
    color: var(--muted);
    font-size: 14px;
}

.speaker-topic {
    color: var(--text);
    font-size: 14px;
    margin: 6px 0 0;
}

.speaker-bio {
    color: var(--muted);
    font-size: 13px;
}

.speaker-company {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid rgba(34, 48, 65, 0.6);
    font-size: 13px;
    color: var(--muted);
}

.speaker-company img {
    width: 96px;
    height: auto;
    opacity: 0.85;
}

.venue-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.venue-card {
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid rgba(34, 48, 65, 0.7);
    background: rgba(20, 27, 36, 0.6);
}

.register {
    border: 1px solid rgba(201, 168, 106, 0.35);
    border-radius: var(--radius);
    padding: 30px;
    background: rgba(20, 27, 36, 0.7);
    box-shadow: var(--shadow);
}

footer {
    padding: 40px 0 50px;
    border-top: 1px solid rgba(34, 48, 65, 0.7);
    background: rgba(10, 14, 20, 0.8);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 20px;
    align-items: center;
}

.socials {
    display: flex;
    gap: 14px;
    align-items: center;
}

.socials a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--muted);
    font-size: 13px;
}

.socials img {
    width: 28px;
    height: 28px;
}

        .back-to-top {
            position: fixed;
            right: 24px;
            bottom: calc(24px + var(--tg-content-safe-area-inset-bottom, 0px));
    width: 46px;
    height: 46px;
    border-radius: 50%;
    border: 1px solid rgba(201, 168, 106, 0.5);
    background: rgba(20, 27, 36, 0.8);
    color: var(--text);
    display: grid;
    place-items: center;
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
    z-index: 60;
}

        .back-to-top.show {
            opacity: 1;
            pointer-events: auto;
        }

        .mini-app-backbar {
            position: fixed;
            left: 16px;
            right: 16px;
            bottom: calc(16px + var(--tg-content-safe-area-inset-bottom, 0px));
            z-index: 65;
            display: flex;
            justify-content: center;
            opacity: 0;
            transform: translateY(16px);
            pointer-events: none;
            transition: opacity 0.25s ease, transform 0.25s ease;
        }

        .mini-app-backbar.show {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }

        .mini-app-backbar button {
            width: min(520px, 100%);
            min-height: 52px;
            padding: 14px 18px;
            border: 1px solid rgba(201, 168, 106, 0.5);
            border-radius: 999px;
            background: linear-gradient(135deg, rgba(201, 168, 106, 0.22), rgba(201, 168, 106, 0.08));
            color: var(--text);
            box-shadow: 0 14px 30px rgba(0, 0, 0, 0.35);
            font: inherit;
            font-weight: 600;
            letter-spacing: 0.3px;
            cursor: pointer;
        }

        body.telegram-mini-app.has-mini-app-back-button #app {
            padding-bottom: calc(var(--app-safe-bottom) + 88px);
        }

        body.telegram-mini-app.has-mini-app-back-button .back-to-top {
            bottom: calc(88px + var(--tg-content-safe-area-inset-bottom, 0px));
        }

.animate {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate.visible {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
    }

    .grid-4 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .topic-list {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .speakers-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .venue-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .nav-links {
        display: none;
    }
}

@media (max-width: 640px) {
    section {
        padding: 50px 0;
    }

    .hero {
        padding-top: 60px;
    }

    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }

    .topic-list {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .timeline-item {
        grid-template-columns: 1fr;
    }

    .speakers-grid, .venue-grid {
        grid-template-columns: 1fr;
    }

    .hero-meta {
        flex-direction: column;
    }

    .nav-inner {
        flex-wrap: nowrap;
        gap: 12px;
    }

    .nav-inner .btn {
        padding: 10px 14px;
        font-size: 13px;
        white-space: nowrap;
    }

    .brand img {
        width: 54px;
    }

    .brand {
        gap: 10px;
        font-size: 14px;
        min-width: 0;
    }
}

#tg_user_name {
    display: none;
}

#tg_user_name .tg-avatar {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    object-fit: cover;
    margin-right: 6px;
    vertical-align: -4px;
    border: 1px solid rgba(201, 168, 106, 0.5);
}

.nav-avatar {
    display: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid rgba(201, 168, 106, 0.6);
    overflow: hidden;
    background: rgba(20, 27, 36, 0.7);
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--text);
}

.nav-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.nav-user {
    display: none;
    align-items: center;
    gap: 10px;
    max-width: 180px;
}

.nav-user-name {
    font-size: 13px;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 120px;
}

.telegram-mini-app .nav .btn {
    display: none;
}

.telegram-mini-app .nav-user {
    display: inline-flex;
}

.telegram-mini-app .nav-avatar {
    display: inline-flex;
}

.telegram-mini-app .calendar-links {
    display: none;
}