:root {
    --bg: #f5f7fb;
    --card: #ffffff;
    --text: #1f2937;
    --muted: #6b7280;
    /* Цвета из презентации (Servier стиль) */
    --primary: #002060; /* тёмно-синий */
    --primary-2: #1f4fbf; /* более яркий синий */
    --accent: #e31e24; /* фирменный красный */

    --accent-soft: #ffe9ea;
    --border: #dbe4f0;
    --shadow: 0 12px 30px rgba(0, 32, 96, 0.12);
    --radius: 22px;
    --container: 1180px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

section[id] {
    scroll-margin-top: 90px;
}

.logos {
    display: flex;
    gap: 20px;
    align-items: center;
}

body {
    margin: 0;
    font-family: Inter, Arial, sans-serif;
    color: var(--text);
    background: linear-gradient(180deg, #eef4ff 0%, var(--bg) 280px, var(--bg) 100%);
    line-height: 1.55;
}

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

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

.container {
    width: min(var(--container), calc(100% - 32px));
    margin: 0 auto;
}

.topbar {
    position: sticky;
    top: 0;
    z-index: 10;
    backdrop-filter: blur(10px);
    background: rgba(255,255,255,0.82);
    border-bottom: 1px solid rgba(219,228,240,0.9);
}

.topbar__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    min-height: 72px;
}

.brand {
    font-weight: 800;
    font-size: 18px;
    color: var(--primary);
    letter-spacing: 0.2px;
}

.nav {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    align-items: center;
}

    .nav a {
        font-size: 14px;
        color: var(--muted);
        transition: 0.2s ease;
    }

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 22px !important;
    border-radius: 999px !important;
    font-weight: 700;
    transition: 0.2s ease;
    border: 0;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-2));
    color: #fff;
    box-shadow: 0 10px 25px rgba(0, 32, 96, 0.25);
}

    .btn-primary:hover {
        transform: translateY(-1px);
    }

.btn--light {
    background: #fff;
    color: var(--primary);
    border: 1px solid var(--border);
}

.hero {
    padding: 56px 0 36px;
}

.hero__grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 28px;
    align-items: stretch;
}

.hero__content,
.hero__info {
    background: rgba(255,255,255,0.92);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.hero__content {
    padding: 40px;
    background: radial-gradient(circle at top right, rgba(59,130,246,0.13), transparent 30%), rgba(255,255,255,0.96);
}

.badge {
    display: inline-flex;
    padding: 8px 14px;
    border-radius: 999px;
    background: var(--accent-soft);
    color: var(--accent);
    font-weight: 700;
    font-size: 13px;
    margin-bottom: 18px;
}

h1, h2, h3, p {
    margin-top: 0;
}

h1 {
    font-size: clamp(32px, 4.6vw, 56px);
    line-height: 1.08;
    margin-bottom: 18px;
    letter-spacing: -0.03em;
}

.hero__lead {
    font-size: 18px;
    color: var(--muted);
    margin-bottom: 24px;
    max-width: 760px;
}

.meta {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    margin: 26px 0 30px;
}

.meta__item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 16px;
}

.meta__label {
    font-size: 12px;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 6px;
}

.meta__value {
    font-size: 17px;
    font-weight: 800;
    color: var(--text);
}

.hero__actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

.hero__info {
    padding: 28px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.info-card {
    background: linear-gradient(180deg, #f9fbff 0%, #eff5ff 100%);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 20px;
}

    .info-card + .info-card {
        margin-top: 16px;
    }

.info-card__title {
    font-size: 14px;
    font-weight: 800;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 8px;
}

section {
    padding: 28px 0;
}

.section-head {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    align-items: end;
    margin-bottom: 22px;
}

    .section-head h2 {
        font-size: clamp(26px, 3vw, 38px);
        margin-bottom: 8px;
        letter-spacing: -0.02em;
    }

    .section-head p {
        color: var(--muted);
        max-width: 760px;
        margin-bottom: 0;
    }

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

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 26px;
    height: 100%;
}

.speaker-name {
    font-size: 22px;
    font-weight: 800;
    margin-bottom: 10px;
    color: var(--primary);
    text-transform: capitalize;
    line-height: 1.4;
}

.speaker-role {
    color: var(--muted);
    font-size: 15px;
}

.program {
    display: grid;
    gap: 16px;
}

.program-item {
    display: grid;
    grid-template-columns: 170px 1.2fr 1fr;
    gap: 18px;
    align-items: start;
    padding: 22px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 22px;
    box-shadow: var(--shadow);
}

.program-time {
    font-size: 22px;
    font-weight: 800;
    color: var(--primary);
    white-space: nowrap;
}

.program-title {
    font-weight: 800;
    font-size: 18px;
    margin-bottom: 6px;
}

.program-speaker {
    color: var(--muted);
    font-size: 15px;
}

.cities {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 16px;
}

.city {
    padding: 10px 16px;
    border-radius: 999px;
    background: #fff;
    border: 1px solid var(--border);
    font-weight: 700;
    color: var(--primary);
}

.cta {
    margin: 30px 0 60px;
}

.cta__box {
    padding: 34px;
    border-radius: 28px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-2) 100%);
    color: #fff;
    box-shadow: 0 18px 40px rgba(0, 32, 96, 0.3);
    position: relative;
    overflow: hidden;
}

    .cta__box::after {
        content: "";
        position: absolute;
        right: -40px;
        bottom: -40px;
        width: 200px;
        height: 200px;
        background: var(--accent);
        border-radius: 50%;
        opacity: 0.15;
    }

    .cta__box h2,
    .cta__box p {
        color: #fff;
    }

.cta__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 18px;
}

    .cta__actions .btn--light {
        border-color: rgba(255,255,255,0.25);
    }

.alert-success {
    background: #eaf7ef;
    border: 1px solid #b6e2c3;
    color: #1e6b3a;
}

.footer {
    padding: 32px 0 40px;
    color: var(--muted);
    font-size: 14px;
    background: #ffffff;
    border-top: 1px solid var(--border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.footer-text {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.footer-logo {
    height: 60px;
    object-fit: contain;
}

@media (max-width: 720px) {
    .footer-content {
        flex-direction: column-reverse;
        align-items: flex-start;
        gap: 16px;
    }

    .footer-logo {
        align-self: flex-end;
    }
}

@media (max-width: 1024px) {
    .hero__grid,
    .grid-3,
    .program-item {
        grid-template-columns: 1fr;
    }

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

.form-section {
    padding: 8px 0 34px;
}

.form-shell {
    background: rgba(255,255,255,0.96);
    border: 1px solid var(--border);
    border-radius: 28px;
    box-shadow: var(--shadow);
    padding: 34px;
}

    .form-shell .row {
        row-gap: 18px;
    }

    .form-shell .form-group {
        position: relative;
        margin-bottom: 0;
    }

    .form-shell .form-control {
        width: 100%;
        min-height: 58px;
        padding: 18px 18px 14px;
        border: 1px solid #cfd9ea;
        border-radius: 18px;
        background: #fff;
        color: var(--text);
        font-size: 16px;
        line-height: 1.4;
        outline: none;
        transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
        appearance: none;
        -webkit-appearance: none;
    }

    .form-shell textarea.form-control {
        min-height: 116px;
        resize: vertical;
        padding-top: 22px;
    }

    .form-shell select.form-control {
        padding-top: 20px;
        cursor: pointer;
        background-image: linear-gradient(45deg, transparent 50%, var(--primary) 50%), linear-gradient(135deg, var(--primary) 50%, transparent 50%);
        background-position: calc(100% - 22px) calc(50% - 3px), calc(100% - 16px) calc(50% - 3px);
        background-size: 6px 6px, 6px 6px;
        background-repeat: no-repeat;
    }

    .form-shell .form-control:focus {
        border-color: var(--primary-2);
        box-shadow: 0 0 0 4px rgba(31, 79, 191, 0.12);
    }

    .form-shell .floating-label {
        position: absolute;
        left: 14px;
        top: -10px;
        z-index: 2;
        padding: 0 10px;
        border-radius: 999px;
        background: #fff;
        color: var(--primary);
        font-size: 12px;
        font-weight: 800;
        letter-spacing: 0.04em;
        text-transform: uppercase;
        pointer-events: none;
        box-shadow: 0 4px 10px rgba(0, 32, 96, 0.06);
    }

    .form-shell .text-danger {
        display: block;
        margin-top: 8px;
        font-size: 13px;
        color: var(--accent);
    }

    .form-shell .alert {
        border-radius: 22px;
        border: 1px solid var(--border);
        padding: 18px 20px;
        margin-bottom: 18px;
    }

        .form-shell .alert p {
            margin-bottom: 12px;
        }

    .form-shell .alert-warning {
        background: #fff8ea;
        border-color: #f2dfb2;
    }

    .form-shell .alert-info {
        background: #eef5ff;
        border-color: #cfe0fb;
    }

    .form-shell .form-check {
        display: flex;
        gap: 10px;
        align-items: flex-start;
        margin-bottom: 10px;
    }

        .form-shell .form-check:last-child {
            margin-bottom: 0;
        }

    .form-shell .form-check-input {
        width: 18px;
        height: 18px;
        margin-top: 2px;
        accent-color: var(--primary-2);
        flex: 0 0 auto;
    }

    .form-shell .form-check-label {
        color: var(--text);
        font-size: 15px;
        line-height: 1.45;
    }

    .form-shell button.btn-primary,
    .form-shell .btn-primary {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        min-height: 56px;
        padding: 14px 28px;
        border: 0;
        border-radius: 999px;
        background: linear-gradient(135deg, var(--primary), var(--primary-2));
        color: #fff;
        font-size: 16px;
        font-weight: 800;
        box-shadow: 0 10px 25px rgba(0, 32, 96, 0.24);
        cursor: pointer;
        transition: transform 0.2s ease, box-shadow 0.2s ease;
    }

        .form-shell button.btn-primary:hover,
        .form-shell .btn-primary:hover {
            transform: translateY(-1px);
            box-shadow: 0 14px 28px rgba(0, 32, 96, 0.28);
        }

    .form-shell .placeholder {
        color: #90a0b8;
    }

@media (max-width: 1024px) {
    .hero__grid,
    .grid-3,
    .program-item {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 720px) {
    .topbar__inner {
        min-height: auto;
        padding: 14px 0;
        align-items: flex-start;
        flex-direction: column;
    }

    .hero__content,
    .hero__info,
    .card,
    .program-item,
    .cta__box,
    .form-shell
    .video-shell {
        padding: 12px;
    }

    .nav {
        gap: 14px;
    }

    .form-shell .form-control {
        min-height: 54px;
        font-size: 15px;
    }
}

.video-shell {
    background: rgba(255,255,255,0.96);
    border: 1px solid var(--border);
    border-radius: 28px;
    box-shadow: var(--shadow);
    padding: 28px;
}

/* Плеер */
#player {
    border-radius: 20px;
    overflow: hidden;
    margin-bottom: 20px;
}

/* Вкладки залов */
.nav-tabs {
    border: none;
    gap: 10px;
    margin-bottom: 20px;
}

    .nav-tabs .nav-item {
        list-style: none;
    }

.video-link {
    display: inline-block;
    padding: 10px 16px;
    border-radius: 999px;
    background: #f3f6fc;
    border: 1px solid var(--border);
    font-weight: 600;
    transition: 0.2s;
}

    .video-link.active {
        background: linear-gradient(135deg, var(--primary), var(--primary-2));
        color: #fff !important;
        border-color: transparent;
    }

/* Чат */
#comments {
    background: #f9fbff;
    border-radius: 20px;
    border: 1px solid var(--border);
}

/* Поле ввода */
#inputForm textarea {
    border-radius: 16px;
    padding: 14px;
}

/* Reply блок */
#replyon-message {
    border-radius: 16px;
}

#comments {
    max-height: 400px;
    overflow-y: auto;
}

#counter {
    background: var(--accent-soft) !important;
    color: var(--accent) !important;
    padding: 6px 12px;
    border-radius: 999px;
    font-weight: 700;
}

.video-shell button.btn-primary,
.video-shell .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 56px;
    padding: 14px 28px;
    border: 0;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--primary), var(--primary-2));
    color: #fff;
    font-size: 16px;
    font-weight: 800;
    box-shadow: 0 10px 25px rgba(0, 32, 96, 0.24);
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

    .video-shell button.btn-primary:hover,
    .video-shell .btn-primary:hover {
        transform: translateY(-1px);
        box-shadow: 0 14px 28px rgba(0, 32, 96, 0.28);
    }

#preloader {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
    overflow: hidden;
    background: #fff;
}

    #preloader:before {
        content: "";
        position: fixed;
        top: calc(50% - 30px);
        left: calc(50% - 30px);
        border: 6px solid var(--primary);
        border-top-color: #d1e6f9;
        border-radius: 50%;
        width: 60px;
        height: 60px;
        animation: animate-preloader 1s linear infinite;
    }

@keyframes animate-preloader {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}