/* ==========================================================================
   APFU - Historia Institucional (Front-End Styles)
   Sistema Completo de Visualización y Registro Histórico
   ========================================================================== */

:root {
    --apfu-primary: #0f3a63;
    --apfu-primary-hover: #164e85;
    --apfu-primary-dark: #0a2540;
    --apfu-accent: #0284c7;
    --apfu-accent-light: #e0f2fe;
    --apfu-accent-dark: #0369a1;
    --apfu-bg-light: #f8fafc;
    --apfu-bg-card: #ffffff;
    --apfu-border: #e2e8f0;
    --apfu-border-hover: #cbd5e1;
    --apfu-text: #1e293b;
    --apfu-text-muted: #64748b;
    --apfu-text-light: #94a3b8;
    --apfu-radius: 10px;
    --apfu-radius-sm: 6px;
    --apfu-radius-lg: 14px;
    --apfu-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --apfu-shadow-hover: 0 12px 20px -3px rgba(0, 0, 0, 0.09), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
    --apfu-transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.apfu-historia-container {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    color: var(--apfu-text);
    line-height: 1.65;
    max-width: 1160px;
    margin: 0 auto;
    padding: 10px;
    box-sizing: border-box;
}

.apfu-historia-container * {
    box-sizing: border-box;
}

/* ==========================================================================
   1. Header Institucional APFU
   ========================================================================== */
.apfu-header-block {
    text-align: center;
    margin-bottom: 25px;
    padding: 36px 24px;
    background: linear-gradient(135deg, var(--apfu-primary) 0%, #1e4b7a 100%);
    color: #ffffff;
    border-radius: var(--apfu-radius-lg);
    box-shadow: var(--apfu-shadow);
    position: relative;
    overflow: hidden;
}
.apfu-header-block::before {
    content: "";
    position: absolute;
    top: -50%;
    right: -20%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}
.apfu-header-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.18);
    color: #e0f2fe;
    font-size: 11.5px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    padding: 4px 14px;
    border-radius: 20px;
    margin-bottom: 14px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}
.apfu-header-title {
    font-size: 28px;
    font-weight: 800;
    margin: 0 0 10px 0;
    color: #ffffff !important;
    line-height: 1.25;
}
.apfu-header-desc {
    font-size: 15px;
    color: #cbd5e1;
    max-width: 780px;
    margin: 0 auto;
    line-height: 1.55;
}

/* ==========================================================================
   2. Quick Index Bar (Sticky Navigation)
   ========================================================================== */
.apfu-quick-index {
    position: sticky;
    top: 20px;
    z-index: 99;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--apfu-border);
    border-radius: 40px;
    padding: 6px 14px;
    margin-bottom: 25px;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.06);
    display: flex;
    align-items: center;
    gap: 8px;
    overflow-x: auto;
    scrollbar-width: none;
}
.apfu-quick-index::-webkit-scrollbar {
    display: none;
}
.apfu-index-pill {
    white-space: nowrap;
    font-size: 13px;
    font-weight: 600;
    color: var(--apfu-text-muted);
    text-decoration: none;
    padding: 6px 14px;
    border-radius: 20px;
    transition: var(--apfu-transition);
    cursor: pointer;
    border: 1px solid transparent;
}
.apfu-index-pill:hover {
    color: var(--apfu-primary);
    background: var(--apfu-accent-light);
}
.apfu-index-pill.active {
    background: var(--apfu-primary);
    color: #ffffff;
    border-color: var(--apfu-primary);
}

/* ==========================================================================
   3. Search & Multi-Criteria Controls Bar
   ========================================================================== */
.apfu-controls-bar {
    background: var(--apfu-bg-card);
    border: 1px solid var(--apfu-border);
    border-radius: var(--apfu-radius);
    padding: 16px 20px;
    margin-bottom: 25px;
    box-shadow: var(--apfu-shadow);
}
.apfu-search-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
}
.apfu-search-icon {
    position: absolute;
    left: 14px;
    font-size: 16px;
    color: var(--apfu-text-muted);
    pointer-events: none;
}
.apfu-search-input {
    width: 100%;
    padding: 12px 40px 12px 42px;
    font-size: 14.5px;
    border: 1.5px solid var(--apfu-border);
    border-radius: 8px;
    background: var(--apfu-bg-light);
    color: var(--apfu-text);
    outline: none;
    transition: var(--apfu-transition);
}
.apfu-search-input:focus {
    border-color: var(--apfu-accent);
    background: #ffffff;
    box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
}
.apfu-search-clear {
    position: absolute;
    right: 12px;
    background: #e2e8f0;
    border: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    font-size: 11px;
    font-weight: 700;
    color: var(--apfu-text-muted);
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    transition: var(--apfu-transition);
}
.apfu-search-clear:hover {
    background: #cbd5e1;
    color: var(--apfu-text);
}
.apfu-search-counter {
    font-size: 13px;
    font-weight: 600;
    color: var(--apfu-accent-dark);
    margin-top: 8px;
    display: none;
}

/* Filters Row */
.apfu-filters-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px solid var(--apfu-border);
}
.apfu-era-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}
.apfu-era-chip {
    background: var(--apfu-bg-light);
    border: 1px solid var(--apfu-border);
    color: var(--apfu-text);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12.5px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--apfu-transition);
}
.apfu-era-chip:hover {
    border-color: var(--apfu-accent);
    color: var(--apfu-accent);
}
.apfu-era-chip.active {
    background: var(--apfu-accent);
    color: #ffffff;
    border-color: var(--apfu-accent);
}

/* Dropdown Filters */
.apfu-dropdown-filters {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}
.apfu-filter-select-wrap select {
    background: var(--apfu-bg-light);
    border: 1px solid var(--apfu-border);
    color: var(--apfu-text);
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 12.5px;
    font-weight: 500;
    outline: none;
    cursor: pointer;
    transition: var(--apfu-transition);
}
.apfu-filter-select-wrap select:focus {
    border-color: var(--apfu-accent);
}

/* View Mode Switcher and Toggles */
.apfu-view-and-toggles {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}
.apfu-view-mode-buttons {
    display: inline-flex;
    background: var(--apfu-bg-light);
    border: 1px solid var(--apfu-border);
    border-radius: 6px;
    padding: 2px;
}
.apfu-view-btn {
    background: transparent;
    border: none;
    padding: 5px 10px;
    font-size: 12px;
    font-weight: 600;
    color: var(--apfu-text-muted);
    border-radius: 4px;
    cursor: pointer;
    transition: var(--apfu-transition);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.apfu-view-btn:hover {
    color: var(--apfu-primary);
}
.apfu-view-btn.active {
    background: #ffffff;
    color: var(--apfu-primary);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    font-weight: 700;
}

.apfu-global-toggles {
    display: flex;
    gap: 6px;
}
.apfu-btn-toggle-all {
    background: transparent;
    border: 1px solid var(--apfu-border);
    color: var(--apfu-text-muted);
    padding: 5px 10px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--apfu-transition);
}
.apfu-btn-toggle-all:hover {
    background: var(--apfu-bg-light);
    color: var(--apfu-primary);
}

/* ==========================================================================
   4. Section Cards (Modo Acordeón)
   ========================================================================== */
.apfu-section-card {
    background: var(--apfu-bg-card);
    border: 1px solid var(--apfu-border);
    border-radius: var(--apfu-radius);
    margin-bottom: 20px;
    box-shadow: var(--apfu-shadow);
    transition: var(--apfu-transition);
    overflow: hidden;
}
.apfu-section-card:hover {
    border-color: var(--apfu-border-hover);
    box-shadow: var(--apfu-shadow-hover);
}
.apfu-section-header {
    padding: 18px 24px;
    background: #ffffff;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
    transition: background 0.2s ease;
}
.apfu-section-header:hover {
    background: var(--apfu-bg-light);
}
.apfu-section-title-group {
    display: flex;
    align-items: center;
    gap: 12px;
}
.apfu-section-badge {
    background: var(--apfu-primary);
    color: #ffffff;
    font-size: 12px;
    font-weight: 800;
    padding: 3px 10px;
    border-radius: 4px;
}
.apfu-section-title {
    font-size: 18px;
    font-weight: 700;
    margin: 0;
    color: var(--apfu-primary);
    line-height: 1.3;
}
.apfu-chevron-icon {
    font-size: 12px;
    color: var(--apfu-text-muted);
    transition: transform 0.3s ease;
}
.apfu-section-body {
    display: none;
    padding: 24px;
    border-top: 1px solid var(--apfu-border);
    background: #ffffff;
}
.apfu-section-card.open .apfu-section-body {
    display: block;
}
.apfu-section-card.open .apfu-chevron-icon {
    transform: rotate(180deg);
}

/* ==========================================================================
   5. Directivas Grid
   ========================================================================== */
.apfu-directivas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}
.apfu-directiva-card {
    background: var(--apfu-bg-light);
    border: 1px solid var(--apfu-border);
    border-radius: var(--apfu-radius-sm);
    padding: 16px;
    transition: var(--apfu-transition);
    cursor: pointer;
}
.apfu-directiva-card:hover {
    border-color: var(--apfu-accent);
    box-shadow: 0 4px 12px rgba(2, 132, 199, 0.08);
}
.apfu-directiva-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1.5px solid var(--apfu-border);
    padding-bottom: 8px;
    margin-bottom: 10px;
}
.apfu-directiva-periodo {
    font-size: 15px;
    font-weight: 800;
    color: var(--apfu-primary);
}
.apfu-president-badge {
    background: #f1f5f9;
    color: var(--apfu-text-muted);
    font-size: 11px;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 12px;
}
.apfu-directiva-members {
    list-style: none;
    margin: 0;
    padding: 0;
}
.apfu-directiva-members li {
    font-size: 13.5px;
    padding: 4px 0;
    color: var(--apfu-text);
    border-bottom: 1px dashed #f1f5f9;
}
.apfu-directiva-members li:last-child {
    border-bottom: none;
}
.apfu-directiva-members li.is-president {
    font-weight: 700;
    color: var(--apfu-accent-dark);
}
.apfu-directiva-notes {
    font-size: 12px;
    font-style: italic;
    color: var(--apfu-text-muted);
    margin-top: 8px;
    padding-top: 6px;
    border-top: 1px solid #f1f5f9;
}

/* ==========================================================================
   6. Timeline & Items List
   ========================================================================== */
.apfu-timeline-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.apfu-timeline-item {
    background: var(--apfu-bg-light);
    border: 1px solid var(--apfu-border);
    border-radius: var(--apfu-radius-sm);
    padding: 16px 20px;
    transition: var(--apfu-transition);
    cursor: pointer;
}
.apfu-timeline-item:hover {
    border-color: var(--apfu-accent);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.04);
}
.apfu-item-meta-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 8px;
}
.apfu-timeline-year-tag {
    display: inline-block;
    background: var(--apfu-primary);
    color: #ffffff;
    font-size: 12px;
    font-weight: 800;
    padding: 2px 9px;
    border-radius: 4px;
}
.apfu-pill-type {
    display: inline-block;
    font-size: 11.5px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 12px;
    background: #e2e8f0;
    color: #334155;
}
.apfu-pill-location {
    font-size: 12px;
    color: var(--apfu-text-muted);
    font-weight: 500;
}
.apfu-pill-featured {
    background: #fef3c7;
    color: #b45309;
    font-size: 11px;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 4px;
}
.apfu-item-title {
    font-size: 15.5px;
    font-weight: 700;
    color: var(--apfu-primary);
    margin: 0 0 6px 0;
}
.apfu-timeline-summary {
    font-size: 13.5px;
    font-weight: 600;
    color: var(--apfu-accent-dark);
    margin-bottom: 8px;
}
.apfu-item-venue,
.apfu-item-protagonistas {
    font-size: 13px;
    color: var(--apfu-text-muted);
    margin-bottom: 6px;
}
.apfu-timeline-lines p,
.apfu-encuentro-line {
    font-size: 13.5px;
    margin: 4px 0;
    line-height: 1.5;
}
.apfu-encuentro-line.is-subheading {
    font-weight: 700;
    color: var(--apfu-primary);
    margin-top: 10px;
}

/* Encuentros Cards */
.apfu-encuentros-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.apfu-encuentro-card {
    background: var(--apfu-bg-light);
    border: 1px solid var(--apfu-border);
    border-radius: var(--apfu-radius-sm);
    padding: 18px 22px;
    transition: var(--apfu-transition);
    cursor: pointer;
}
.apfu-encuentro-card:hover {
    border-color: var(--apfu-accent);
}
.apfu-encuentro-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--apfu-border);
    padding-bottom: 10px;
    margin-bottom: 12px;
    flex-wrap: wrap;
    gap: 8px;
}
.apfu-encuentro-roman {
    font-size: 16px;
    font-weight: 800;
    color: var(--apfu-primary);
}
.apfu-card-tags {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Document Cards */
.apfu-doc-card {
    background: var(--apfu-bg-light);
    border: 1px solid var(--apfu-border);
    border-left: 4px solid var(--apfu-accent);
    border-radius: var(--apfu-radius-sm);
    padding: 14px 18px;
    margin-bottom: 12px;
    display: flex;
    gap: 14px;
    align-items: flex-start;
    transition: var(--apfu-transition);
    cursor: pointer;
}
.apfu-doc-card:hover {
    border-color: var(--apfu-accent);
    background: #ffffff;
    box-shadow: var(--apfu-shadow);
}
.apfu-doc-card-badge {
    background: var(--apfu-accent-light);
    color: var(--apfu-accent-dark);
    font-size: 12px;
    font-weight: 700;
    padding: 4px 8px;
    border-radius: 4px;
    white-space: nowrap;
}
.apfu-doc-card-text {
    font-size: 13.5px;
    color: var(--apfu-text);
    flex-grow: 1;
}

/* Attachments Buttons */
.apfu-item-attachments {
    margin-top: 10px;
    padding-top: 8px;
    border-top: 1px dashed var(--apfu-border);
}
.apfu-attachments-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 6px;
}
.apfu-doc-btn {
    display: inline-flex;
    align-items: center;
    background: #ffffff;
    border: 1px solid var(--apfu-accent);
    color: var(--apfu-accent-dark);
    text-decoration: none;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 6px;
    transition: var(--apfu-transition);
}
.apfu-doc-btn:hover {
    background: var(--apfu-accent);
    color: #ffffff;
    text-decoration: none;
}

/* ==========================================================================
   7. Vistas Alternativas: Timeline y Cuadrícula de Fichas (Cards)
   ========================================================================== */

/* Modo Timeline Continuo */
.apfu-view-timeline .apfu-timeline-list,
.apfu-view-timeline .apfu-encuentros-list {
    position: relative;
    padding-left: 28px;
}
.apfu-view-timeline .apfu-timeline-list::before,
.apfu-view-timeline .apfu-encuentros-list::before {
    content: "";
    position: absolute;
    top: 10px;
    bottom: 10px;
    left: 8px;
    width: 2px;
    background: linear-gradient(to bottom, var(--apfu-accent), var(--apfu-primary));
    border-radius: 2px;
}
.apfu-view-timeline .apfu-timeline-item,
.apfu-view-timeline .apfu-encuentro-card {
    position: relative;
}
.apfu-view-timeline .apfu-timeline-item::before,
.apfu-view-timeline .apfu-encuentro-card::before {
    content: "";
    position: absolute;
    left: -24px;
    top: 20px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--apfu-accent);
    border: 2px solid #ffffff;
    box-shadow: 0 0 0 2px var(--apfu-accent);
}

/* Modo Cards / Fichas Grid */
.apfu-view-cards .apfu-timeline-list,
.apfu-view-cards .apfu-encuentros-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 16px;
}

/* ==========================================================================
   8. Front-End Event Modal Popup
   ========================================================================== */
.apfu-fe-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.65);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    z-index: 999999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.apfu-fe-modal-box {
    background: #ffffff;
    border-radius: var(--apfu-radius-lg);
    width: 100%;
    max-width: 680px;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    overflow: hidden;
    animation: apfuFadeUp 0.25s ease-out;
}
@keyframes apfuFadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
.apfu-fe-modal-header {
    background: var(--apfu-primary);
    color: #ffffff;
    padding: 16px 22px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.apfu-fe-modal-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}
.apfu-fe-modal-year {
    background: #ffffff;
    color: var(--apfu-primary);
    font-size: 12px;
    font-weight: 800;
    padding: 2px 8px;
    border-radius: 4px;
}
.apfu-fe-modal-type {
    background: rgba(255, 255, 255, 0.2);
    color: #e0f2fe;
    font-size: 11.5px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 12px;
}
.apfu-fe-modal-category {
    font-size: 12px;
    color: #cbd5e1;
}
.apfu-fe-modal-close {
    background: transparent;
    border: none;
    color: #ffffff;
    font-size: 20px;
    cursor: pointer;
    line-height: 1;
    padding: 4px 8px;
    border-radius: 4px;
}
.apfu-fe-modal-close:hover {
    background: rgba(255, 255, 255, 0.15);
}
.apfu-fe-modal-body {
    padding: 24px;
    overflow-y: auto;
    flex-grow: 1;
}
.apfu-fe-modal-title {
    font-size: 20px;
    font-weight: 800;
    color: var(--apfu-primary);
    margin: 0 0 10px 0;
}
.apfu-fe-modal-location {
    font-size: 13.5px;
    color: var(--apfu-text-muted);
    font-weight: 600;
    margin-bottom: 12px;
}
.apfu-fe-modal-speakers {
    font-size: 13.5px;
    color: var(--apfu-text);
    background: var(--apfu-bg-light);
    padding: 10px 14px;
    border-radius: 6px;
    margin-bottom: 16px;
    border-left: 3px solid var(--apfu-accent);
}
.apfu-fe-modal-text p {
    font-size: 14.5px;
    line-height: 1.6;
    margin: 8px 0;
}
.apfu-fe-modal-attachments {
    margin-top: 18px;
    padding-top: 14px;
    border-top: 1px solid var(--apfu-border);
}
.apfu-fe-modal-links-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 8px;
}
.apfu-fe-modal-footer {
    border-top: 1px solid var(--apfu-border);
    padding: 12px 22px;
    background: var(--apfu-bg-light);
    display: flex;
    justify-content: flex-end;
}
.apfu-fe-modal-btn-close {
    background: var(--apfu-primary);
    color: #ffffff;
    border: none;
    padding: 8px 18px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--apfu-transition);
}
.apfu-fe-modal-btn-close:hover {
    background: var(--apfu-primary-hover);
}

/* ==========================================================================
   9. Responsive Media Queries
   ========================================================================== */
@media (max-width: 768px) {
    .apfu-header-title {
        font-size: 22px;
    }
    .apfu-header-block {
        padding: 24px 16px;
    }
    .apfu-filters-row {
        flex-direction: column;
        align-items: stretch;
    }
    .apfu-dropdown-filters,
    .apfu-view-and-toggles {
        width: 100%;
        justify-content: space-between;
    }
    .apfu-filter-select-wrap {
        flex: 1;
    }
    .apfu-filter-select-wrap select {
        width: 100%;
    }
    .apfu-section-title {
        font-size: 16px;
    }
    .apfu-section-body {
        padding: 16px;
    }
}