/* ═══════════════════════════════════════════════════════════════
   AUSSTELLUNGEN TIMELINE — Styles
   ═══════════════════════════════════════════════════════════════ */

:root {
    --at-gold:        #b8963e;
    --at-gold-light:  #d4b06a;
    --at-black:       #1a1a1a;
    --at-dark:        #2a2a2a;
    --at-gray:        #888;
    --at-light-gray:  #f2f2f0;
    --at-border:      #e0ddd7;
    --at-bg:          #f7f6f3;
    --at-white:       #ffffff;
    --at-font:        'Georgia', 'Times New Roman', serif;
    --at-font-ui:     'Helvetica Neue', Arial, sans-serif;
    --at-radius:      4px;
    --at-transition:  0.25s ease;
}

.at-timeline {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px 60px;
    font-family: var(--at-font-ui);
    color: var(--at-black);
    background: var(--at-bg);
}

/* ─── Навигация по годам ────────────────────────────────────────── */
.at-years {
    display: flex;
    justify-content: center;
    align-items: baseline;
    gap: 40px;
    padding: 32px 0 20px;
}

.at-year {
    background: none;
    border: none;
    cursor: pointer;
    font-family: var(--at-font);
    font-size: 2.4rem;
    color: #b0ab9e;
    padding: 0;
    line-height: 1;
    transition: color var(--at-transition), font-size var(--at-transition);
    letter-spacing: -0.02em;
}

.at-year:hover {
    color: #7a7060;
}

.at-year--active {
    font-size: 3.2rem;
    color: var(--at-gold);
    font-weight: bold;
}

/* ─── Навигация по месяцам ──────────────────────────────────────── */
.at-months-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 0 0 4px;
    position: relative;
}

.at-months-track-outer {
    flex: 1;
    overflow: hidden;
}

.at-months-track {
    display: flex;
    gap: 0;
    transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    will-change: transform;
}

.at-month {
    flex: 0 0 auto;
    min-width: 80px;
    text-align: center;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    padding: 10px 16px 8px;
    font-family: var(--at-font-ui);
    font-size: 0.85rem;
    font-weight: 400;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    cursor: default;
    color: var(--at-gray);
    transition: color var(--at-transition), border-color var(--at-transition);
    white-space: nowrap;
}

.at-month--has-events {
    cursor: pointer;
    color: var(--at-dark);
}

.at-month--has-events:hover {
    color: var(--at-gold);
}

.at-month--active {
    color: var(--at-gold) !important;
    border-bottom-color: var(--at-gold);
    font-weight: 600;
}

.at-month--empty {
    opacity: 0.4;
    pointer-events: none;
}

.at-months-arrow {
    flex: 0 0 auto;
    background: none;
    border: 1px solid var(--at-border);
    color: var(--at-gray);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--at-transition);
    padding: 0;
}

.at-months-arrow:hover {
    background: var(--at-gold);
    border-color: var(--at-gold);
    color: var(--at-white);
}

/* ─── Разделитель ────────────────────────────────────────────────── */
.at-divider {
    height: 1px;
    background: var(--at-border);
    margin: 0 0 28px;
}

/* ─── Секция карточек ────────────────────────────────────────────── */
.at-cards-section {
    position: relative;
    min-height: 300px;
}

.at-cards-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    transition: opacity var(--at-transition);
}

.at-cards-grid.at-loading {
    opacity: 0.3;
    pointer-events: none;
}

/* ─── Loader ─────────────────────────────────────────────────────── */
.at-cards-loader {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
}

.at-spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--at-border);
    border-top-color: var(--at-gold);
    border-radius: 50%;
    animation: at-spin 0.7s linear infinite;
}

@keyframes at-spin {
    to { transform: rotate(360deg); }
}

/* ─── Карточка ───────────────────────────────────────────────────── */
.at-card {
    background: var(--at-white);
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    animation: at-fade-in 0.4s ease both;
}

@keyframes at-fade-in {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

.at-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.12);
}

/* Задержка для каждой карточки */
.at-card:nth-child(1) { animation-delay: 0.00s; }
.at-card:nth-child(2) { animation-delay: 0.07s; }
.at-card:nth-child(3) { animation-delay: 0.14s; }
.at-card:nth-child(4) { animation-delay: 0.21s; }

.at-card--past {
    opacity: 0.85;
}

.at-card__image {
    width: 100%;
    aspect-ratio: 3 / 2;
    overflow: hidden;
    background: #e8e5e0;
}

.at-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}

.at-card:hover .at-card__image img {
    transform: scale(1.04);
}

.at-card__no-image {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #e8e5e0 0%, #d4cfc7 100%);
}

.at-card__body {
    padding: 16px 18px 0;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.at-card__title {
    font-family: var(--at-font);
    font-size: 1.05rem;
    font-weight: bold;
    line-height: 1.3;
    margin: 0 0 6px;
}

.at-card__title a {
    color: var(--at-black);
    text-decoration: none;
    transition: color var(--at-transition);
}

.at-card__title a:hover {
    color: var(--at-gold);
}

.at-card__dates {
    font-size: 0.78rem;
    color: var(--at-gray);
    margin-bottom: 10px;
    font-style: italic;
}

.at-card__meta {
    flex: 1;
    margin-bottom: 14px;
}

.at-card__vernissage-label {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--at-gray);
    text-transform: uppercase;
    margin-bottom: 2px;
}

.at-card__vernissage-info {
    font-size: 0.82rem;
    color: var(--at-dark);
    margin-bottom: 4px;
}

.at-card__location {
    font-size: 0.82rem;
    color: var(--at-dark);
}

.at-card__btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--at-gold);
    color: var(--at-white);
    text-decoration: none;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    padding: 12px 16px;
    transition: background var(--at-transition);
    margin-top: auto;
}

.at-card__btn:hover {
    background: var(--at-dark);
    color: var(--at-white);
}

.at-card__btn span {
    font-size: 0.65rem;
}

/* ─── Нет событий ────────────────────────────────────────────────── */
.at-no-events {
    text-align: center;
    padding: 60px 20px;
    color: var(--at-gray);
    font-style: italic;
    font-size: 0.95rem;
}

/* ─── Адаптив ────────────────────────────────────────────────────── */
@media (max-width: 1100px) {
    .at-cards-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .at-cards-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .at-year {
        font-size: 1.6rem;
    }

    .at-year--active {
        font-size: 2.2rem;
    }

    .at-years {
        gap: 20px;
    }

    .at-month {
        min-width: 60px;
        padding: 8px 10px 6px;
        font-size: 0.78rem;
    }
}

@media (max-width: 480px) {
    .at-cards-grid {
        grid-template-columns: 1fr;
    }

    .at-timeline {
        padding: 0 12px 40px;
    }
}