/* ============================================================
   Course Chat — Aggregate Discovery Page Styles
   Extends stable.css base styles with course-level additions.
   ============================================================ */

/* --- Quick re-entry for returning members -------------------- */

.course-your-chats {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.25rem;
    background: rgba(var(--theme-primary-rgb, 0, 166, 156), 0.05);
    border-bottom: 1px solid var(--theme-border-color);
    flex-wrap: wrap;
}

.course-your-chats__label {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--theme-text-muted);
}

.course-your-chats__link {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--theme-primary);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.course-your-chats__link:hover {
    text-decoration: underline;
}

.course-your-chats__link i {
    font-size: 0.65rem;
}

/* --- Period Discovery Cards ---------------------------------- */

.course-period-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--theme-border-color);
}

.course-period-card {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1rem;
    border-radius: 14px;
    border: 1px solid var(--theme-border-color);
    background: var(--theme-surface-1);
    text-decoration: none;
    color: var(--theme-text-primary);
    transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.course-period-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    text-decoration: none;
    color: var(--theme-text-primary);
}

[data-bs-theme="dark"] .course-period-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.course-period-card__icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

/* Period-specific colors */
.course-period-card--morning .course-period-card__icon {
    background: rgba(251, 191, 36, 0.15);
    color: #b45309;
}
.course-period-card--noon .course-period-card__icon {
    background: rgba(var(--theme-primary-rgb, 0, 166, 156), 0.12);
    color: var(--theme-primary);
}
.course-period-card--afternoon .course-period-card__icon {
    background: rgba(139, 92, 246, 0.12);
    color: #7c3aed;
}

[data-bs-theme="dark"] .course-period-card--morning .course-period-card__icon {
    background: rgba(251, 191, 36, 0.2);
    color: #fbbf24;
}
[data-bs-theme="dark"] .course-period-card--afternoon .course-period-card__icon {
    background: rgba(139, 92, 246, 0.18);
    color: #a78bfa;
}

.course-period-card--morning:hover {
    border-color: #fbbf24;
}
.course-period-card--noon:hover {
    border-color: var(--theme-primary);
}
.course-period-card--afternoon:hover {
    border-color: #8b5cf6;
}

.course-period-card__body {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.course-period-card__name {
    font-weight: 700;
    font-size: 0.88rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.course-period-card__count {
    font-size: 0.72rem;
    color: var(--theme-text-muted);
}

.course-period-card__action {
    flex-shrink: 0;
}

.course-period-card__cta {
    font-size: 0.75rem;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    white-space: nowrap;
}

.course-period-card__cta--enter {
    color: var(--theme-primary);
}

.course-period-card__cta--join {
    color: var(--theme-text-muted);
}

.course-period-card:hover .course-period-card__cta--join {
    color: var(--theme-primary);
}

/* --- Recent Activity Section --------------------------------- */

.course-recent-activity {
    display: flex;
    flex-direction: column;
}

/* Override the chat-style column-reverse layout — aggregate feed is a read-only list, not a chat */
.course-recent-activity .stable-feed {
    flex: none;
    overflow: visible;
}

.course-recent-activity .stable-feed__items {
    display: flex;
    flex-direction: column;
}

.course-recent-activity__header {
    padding: 0.625rem 1.25rem;
    border-bottom: 1px solid var(--theme-border-color);
}

.course-recent-activity__title {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--theme-text-muted);
}

/* --- Slice Badges on Feed Items ------------------------------ */

.feed-slice-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.125rem 0.5rem;
    border-radius: 999px;
    font-size: 0.6875rem;
    font-weight: 600;
    line-height: 1.2;
    text-decoration: none;
    white-space: nowrap;
    vertical-align: middle;
}

a.feed-slice-badge:hover {
    text-decoration: none;
    filter: brightness(0.92);
}

.feed-slice-badge--morning {
    background: rgba(251, 191, 36, 0.15);
    color: #b45309;
}

.feed-slice-badge--noon {
    background: rgba(59, 130, 246, 0.12);
    color: #1d4ed8;
}

.feed-slice-badge--afternoon {
    background: rgba(249, 115, 22, 0.12);
    color: #c2410c;
}

/* --- Dark Mode ----------------------------------------------- */

[data-bs-theme="dark"] .feed-slice-badge--morning {
    background: rgba(251, 191, 36, 0.2);
    color: #fbbf24;
}

[data-bs-theme="dark"] .feed-slice-badge--noon {
    background: rgba(59, 130, 246, 0.18);
    color: #60a5fa;
}

[data-bs-theme="dark"] .feed-slice-badge--afternoon {
    background: rgba(249, 115, 22, 0.18);
    color: #fb923c;
}

[data-bs-theme="dark"] .course-your-chats {
    background: rgba(var(--theme-primary-rgb, 0, 166, 156), 0.08);
}

/* --- Responsive ---------------------------------------------- */

@media (max-width: 767px) {
    .course-period-cards {
        grid-template-columns: 1fr;
        padding: 0.75rem;
        gap: 0.5rem;
    }

    .course-your-chats {
        padding: 0.375rem 0.75rem;
    }
}

@media (min-width: 768px) and (max-width: 1023px) {
    .course-period-cards {
        grid-template-columns: repeat(3, 1fr);
    }
}