/* =============================================================================
   EVENT DISCOVERY COMPONENTS (event-discovery-components.css)
   ============================================================================= 
   Phase 5: extends the Phase 3 Event Design System (event-components.css)
   with the primitives a discovery/browse experience needs that didn't
   exist yet - search, filter controls, calendar grid, sort, load-more, and
   event card display variants. Everything here is still "eds-" prefixed
   and scoped under .eds-scope, so these components are just as reusable on
   any future page as the rest of the library - not tied to
   events-calendar.html specifically.

   REUSED AS-IS FROM PHASE 3 (not redefined here): .eds-tabs-nav/.eds-tab
   (view switcher, status tabs), .eds-chip (filter chips), .eds-pagination
   (archive/power-user pagination), .eds-badge (status), .eds-tag
   (category/industry), .eds-empty-state, .eds-skeleton, .eds-btn,
   .eds-related-card (base event card - extended with variants below).
   ============================================================================= */

/* =============================================================================
   1. SEARCH
   ============================================================================= */
.eds-search {
    position: relative;
    max-width: 560px;
}

.eds-search-input-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.eds-search-icon {
    position: absolute;
    left: 18px;
    color: var(--text-muted);
    font-size: 0.95rem;
    pointer-events: none;
}

.eds-search-input {
    width: 100%;
    padding: 14px 44px;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-pill, 999px);
    font-family: inherit;
    font-size: 0.95rem;
    color: var(--text-dark);
    background: var(--white);
    transition: var(--transition-fast);
}

.eds-search-input:focus {
    outline: none;
    border-color: var(--primary-red);
    box-shadow: 0 0 0 3px rgba(228, 31, 38, 0.08);
}

.eds-search-clear {
    position: absolute;
    right: 10px;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: none;
    background: var(--bg-light);
    color: var(--text-muted);
    font-size: 0.75rem;
    display: none;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.eds-search--has-value .eds-search-clear {
    display: flex;
}

/* Search Suggestions - shown while typing, before a query is committed */
.eds-search-suggestions {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: var(--white);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm, 8px);
    box-shadow: var(--shadow-md, 0 20px 40px rgba(0, 0, 0, 0.12));
    z-index: 50;
    max-height: 340px;
    overflow-y: auto;
    display: none;
}

.eds-search--active .eds-search-suggestions {
    display: block;
}

.eds-search-suggestion {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 18px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.eds-search-suggestion:hover,
.eds-search-suggestion--highlighted {
    background: var(--bg-light);
}

.eds-search-suggestion i {
    color: var(--text-muted);
    font-size: 0.85rem;
    flex-shrink: 0;
}

.eds-search-suggestion-text strong {
    color: var(--primary-red);
    font-weight: 700;
}

.eds-search-suggestion-meta {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-left: auto;
    flex-shrink: 0;
}

.eds-search-no-results {
    padding: 20px 18px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.88rem;
}

/* =============================================================================
   2. FILTER BAR / PANEL
   ============================================================================= */
.eds-filter-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    padding: 20px 0;
}

.eds-filter-bar--sticky {
    position: sticky;
    top: 76px;
    z-index: 95;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-light, #e2e8f0);
}

/* Filter Dropdown - a single facet (Category / Industry / City / Year...).
   Built as a native <select> for zero-JS-required accessibility and
   effortless mobile UX (native pickers), styled to match the design
   system rather than reimplementing a custom dropdown widget. */
.eds-filter-select {
    appearance: none;
    padding: 10px 36px 10px 16px;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-pill, 999px);
    background: var(--white) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23555' stroke-width='1.5' fill='none' fill-rule='evenodd'/%3E%3C/svg%3E") no-repeat right 14px center;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-dark);
    cursor: pointer;
    transition: var(--transition-fast);
}

.eds-filter-select:hover {
    border-color: var(--primary-red);
}

.eds-filter-select:focus {
    outline: none;
    border-color: var(--primary-red);
}

.eds-filter-select--active {
    background-color: rgba(228, 31, 38, 0.06);
    border-color: var(--primary-red);
    color: var(--primary-red);
}

.eds-filter-divider {
    width: 1px;
    height: 24px;
    background: var(--border-light);
    margin: 0 4px;
}

.eds-filter-clear {
    color: var(--primary-red);
    font-size: 0.85rem;
    font-weight: 700;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px 4px;
    display: none;
}

.eds-filter-bar--has-active .eds-filter-clear {
    display: inline-flex;
}

/* Active Filter Chips row - shows currently applied filters as removable
   .eds-chip elements (reuses Phase 3's chip, just in a dedicated row) */
.eds-active-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding-bottom: 16px;
}

.eds-active-filters:empty {
    display: none;
}

.eds-active-filter-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(228, 31, 38, 0.06);
    border: 1px solid rgba(228, 31, 38, 0.2);
    color: var(--primary-red);
    font-size: 0.82rem;
    font-weight: 600;
    padding: 6px 8px 6px 14px;
    border-radius: var(--radius-pill, 999px);
}

.eds-active-filter-chip button {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    border: none;
    background: rgba(228, 31, 38, 0.15);
    color: var(--primary-red);
    font-size: 0.6rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

/* Result Count + Sort row */
.eds-results-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    padding: 8px 0 24px;
}

.eds-results-count {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.eds-results-count strong {
    color: var(--text-dark);
}

.eds-sort-select {
    /* Reuses .eds-filter-select styling exactly - sort is conceptually a
       facet too (it changes what's shown, just ordering instead of
       filtering), so no separate visual language was invented for it. */
}

/* =============================================================================
   3. VIEW SWITCHER (Month / List / Timeline / Compact)
   ============================================================================= */
/* Reuses .eds-pills (Phase 3) directly as the view switcher - documented
   here as a usage pattern, not a new component: .eds-pill.eds-pill--active
   per view, e.g. "List", "Month", "Timeline". */

/* =============================================================================
   4. CALENDAR MONTH VIEW
   ============================================================================= */
.eds-calendar {
    background: var(--white);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md, 12px);
    overflow: hidden;
}

.eds-calendar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-light);
}

.eds-calendar-month-label {
    font-size: 1.15rem;
    font-weight: 800;
}

.eds-calendar-nav {
    display: flex;
    gap: 8px;
}

.eds-calendar-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    border-bottom: 1px solid var(--border-light);
}

.eds-calendar-weekday {
    text-align: center;
    padding: 12px 4px;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
}

.eds-calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
}

.eds-calendar-day {
    min-height: 92px;
    padding: 8px;
    border-right: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
    display: flex;
    flex-direction: column;
    gap: 4px;
    cursor: default;
}

.eds-calendar-grid .eds-calendar-day:nth-child(7n) {
    border-right: none;
}

.eds-calendar-day--outside {
    background: var(--bg-light);
    opacity: 0.5;
}

.eds-calendar-day--today .eds-calendar-day-num {
    background: var(--primary-red);
    color: var(--white);
}

.eds-calendar-day-num {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 0.82rem;
    font-weight: 600;
}

.eds-calendar-day-events {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.eds-calendar-event-dot {
    display: block;
    font-size: 0.68rem;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: var(--radius-xs, 4px);
    background: rgba(228, 31, 38, 0.1);
    color: var(--primary-red);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    cursor: pointer;
}

.eds-calendar-event-dot:hover {
    background: var(--primary-red);
    color: var(--white);
}

.eds-calendar-day-more {
    font-size: 0.68rem;
    color: var(--text-muted);
    font-weight: 600;
}

.eds-related-card-body {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.eds-related-card-body .eds-event-card-meta,
.eds-related-card-body .eds-card-cta {
    margin-top: auto;
}

/* =============================================================================
   5. TIMELINE VIEW (chronological, grouped by month - distinct from the
   Agenda Timeline Item in Phase 3, which is single-day/session-level)
   ============================================================================= */
.eds-discovery-timeline {
    position: relative;
    padding-left: 32px;
}

.eds-discovery-timeline::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: var(--border-light);
}

.eds-discovery-timeline-group {
    margin-bottom: 40px;
}

.eds-discovery-timeline-month {
    position: relative;
    font-size: 0.85rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.eds-discovery-timeline-month::before {
    content: '';
    position: absolute;
    left: -32px;
    top: 3px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--primary-red);
    border: 3px solid var(--white);
    box-shadow: 0 0 0 1px var(--border-light);
}

.eds-discovery-timeline-items {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* =============================================================================
   6. EVENT CARD DISPLAY VARIANTS
   All variants build on Phase 3's .eds-related-card - this section only
   adds layout modifiers, never redefines the base card's visual language
   (radius/shadow/hover already come from .eds-related-card).
   ============================================================================= */

/* Featured variant - large, editorial, for hero-adjacent spotlight slots */
.eds-event-card--featured {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    min-height: 320px;
}

.eds-event-card--featured img {
    height: 100%;
    aspect-ratio: auto;
}

.eds-event-card--featured .eds-related-card-body {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 36px;
}

.eds-event-card--featured .eds-event-card-title {
    font-size: 1.4rem;
}

/* Compact variant - dense list rendering for large result sets */
.eds-event-card--compact {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px;
}

.eds-event-card--compact img {
    width: 64px;
    height: 64px;
    aspect-ratio: 1 / 1;
    border-radius: var(--radius-sm, 8px);
    flex-shrink: 0;
}

.eds-event-card--compact .eds-related-card-body {
    padding: 0;
    min-width: 0;
}

.eds-event-card--compact .eds-event-card-title {
    font-size: 0.92rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Horizontal variant - for List View rows (wider image, more description) */
.eds-event-card--horizontal {
    display: grid;
    grid-template-columns: 220px 1fr;
}

.eds-event-card--horizontal img {
    height: 100%;
}

.eds-event-card--horizontal .eds-related-card-body {
    padding: 22px 24px;
}

.eds-event-card--horizontal .eds-event-card-desc {
    color: var(--text-muted);
    font-size: 0.88rem;
    line-height: 1.6;
    margin: 8px 0 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Shared meta row (date/city/category chips) used across all card variants */
.eds-event-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 14px;
    margin-top: 8px;
    font-size: 0.78rem;
    color: var(--text-muted);
}

.eds-event-card-meta span {
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.eds-event-card-meta i {
    color: var(--primary-red);
    font-size: 0.75rem;
}

.eds-event-card-badges {
    position: absolute;
    top: 14px;
    left: 14px;
    display: flex;
    gap: 6px;
    z-index: 2;
}

/* Album Card image-count badge (Phase 13) - bottom-right overlay on the
   cover image, distinct from the top-left status/featured badges above so
   the two never collide visually. */
.eds-album-count {
    position: absolute;
    bottom: 12px;
    right: 12px;
    z-index: 2;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(10, 10, 10, 0.65);
    color: var(--white);
    font-size: 0.78rem;
    font-weight: 600;
    padding: 5px 12px;
    border-radius: var(--radius-pill, 999px);
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
}

.eds-album-count i {
    font-size: 0.7rem;
}

/* Standard grid, list, and compact-list layout wrappers */
.eds-events-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}

.eds-events-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.eds-events-compact-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

/* Responsive Masonry Grid (Phase 13, Gallery system) - CSS-columns-based
   masonry, no JS library needed. Used for album cover grids and an album
   detail page's full image grid where images have varying aspect ratios
   and a strict row-grid (like .eds-gallery-grid, Phase 3) would leave
   awkward gaps. Falls back gracefully to fewer columns on narrower
   viewports via the shared breakpoint scale below. */
.eds-masonry-grid {
    column-count: 4;
    column-gap: 20px;
}

.eds-masonry-grid > * {
    break-inside: avoid;
    margin-bottom: 20px;
}

.eds-masonry-grid img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-sm, 8px);
    display: block;
}


/* =============================================================================
   7. LOAD MORE / PAGINATION
   ============================================================================= */
.eds-load-more-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    margin-top: 40px;
}

.eds-load-more-progress {
    font-size: 0.82rem;
    color: var(--text-muted);
}

.eds-load-more-track {
    width: 160px;
    height: 3px;
    background: var(--border-light);
    border-radius: var(--radius-pill, 999px);
    overflow: hidden;
}

.eds-load-more-fill {
    height: 100%;
    background: var(--primary-red);
    border-radius: var(--radius-pill, 999px);
    transition: width 0.3s ease;
}

/* =============================================================================
   8. DISCOVERY-SPECIFIC EMPTY / LOADING / ERROR STATES
   Reuse .eds-empty-state / .eds-skeleton / .eds-state (Phase 3) directly.
   Documented usage: "No Search Results" and "No Events" both use
   .eds-empty-state with different icon/copy; "Archive Empty" is the same
   component inside the Past Events tab panel; "Loading" uses a grid of
   .eds-skeleton cards matching .eds-events-grid's layout so there's no
   layout shift when real cards replace them; "Error" uses .eds-state--error.
   ============================================================================= */
.eds-skeleton-card {
    border-radius: var(--radius-md, 12px);
    overflow: hidden;
    border: 1px solid var(--border-light);
}

.eds-skeleton-card-body {
    padding: 18px;
}

/* =============================================================================
   RESPONSIVE - snapped to the shared 4-tier breakpoint scale
   ============================================================================= */
@media screen and (max-width: 1024px) {
    .eds-event-card--featured {
        grid-template-columns: 1fr;
        min-height: 0;
    }

    .eds-event-card--featured img {
        aspect-ratio: 16 / 9;
    }

    .eds-event-card--horizontal {
        grid-template-columns: 180px 1fr;
    }

    .eds-masonry-grid {
        column-count: 3;
    }
}

@media screen and (max-width: 991px) {
    .eds-filter-bar {
        display: flex;
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
        padding: 12px 14px;
        overflow: visible;
        border-radius: 12px;
        background: rgba(255, 255, 255, 0.96);
        border: 1px solid var(--border-light, #e2e8f0);
        box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
    }

    .eds-filter-bar--sticky {
        top: 60px;
    }

    .eds-filter-bar .eds-search {
        width: 100%;
        max-width: none;
        flex: 0 0 auto;
    }

    .eds-filter-bar .eds-filter-divider {
        display: none;
    }

    .eds-filter-controls-group,
    .blg-filters-right,
    .med-filters-right {
        display: flex;
        align-items: center;
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scroll-snap-type: x proximity;
        scrollbar-width: none;
        gap: 8px;
        padding-bottom: 4px;
        width: 100%;
        margin-left: 0 !important;
    }

    .eds-filter-controls-group::-webkit-scrollbar,
    .blg-filters-right::-webkit-scrollbar,
    .med-filters-right::-webkit-scrollbar {
        display: none;
    }

    .eds-filter-controls-group .eds-filter-select,
    .eds-filter-controls-group .eds-filter-clear,
    .blg-filters-right .eds-filter-select,
    .blg-filters-right .eds-filter-clear,
    .med-filters-right .eds-filter-select,
    .med-filters-right .eds-filter-clear {
        flex-shrink: 0;
        scroll-snap-align: start;
    }
}

@media screen and (max-width: 768px) {
    .eds-results-toolbar {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .eds-calendar-day {
        min-height: 64px;
        padding: 4px;
    }

    .eds-calendar-event-dot {
        font-size: 0;
        padding: 0;
        width: 6px;
        height: 6px;
        border-radius: 50%;
    }

    .eds-calendar-day-events {
        flex-direction: row;
        flex-wrap: wrap;
    }

    .eds-event-card--horizontal {
        grid-template-columns: 1fr;
    }

    .eds-event-card--horizontal img {
        aspect-ratio: 16 / 9;
        height: auto;
    }

    .eds-events-grid {
        grid-template-columns: 1fr;
    }

    .eds-masonry-grid {
        column-count: 2;
    }
}

@media screen and (max-width: 480px) {
    .eds-search-input {
        padding: 12px 40px;
        font-size: 0.9rem;
    }

    .eds-calendar-weekday {
        font-size: 0.62rem;
    }

    .eds-calendar-day {
        min-height: 52px;
    }

    .eds-calendar-day-num {
        width: 20px;
        height: 20px;
        font-size: 0.75rem;
    }

    .eds-masonry-grid {
        column-count: 1;
    }
}

@media (prefers-reduced-motion: reduce) {
    .eds-load-more-fill {
        transition: none !important;
    }
}