/* ============================================
   PDF Viewer (Stabil + Mobile Friendly)
   ============================================ */

.viewer-body {
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    background: var(--bg-secondary);
}

.viewer-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.viewer-header {
    background: var(--bg-card);
    padding: 12px 16px;
    box-shadow: var(--shadow-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
    flex: 1;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.header-selects {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.btn-back {
    background: var(--secondary-color);
    color: #fff;
    border: none;
    padding: 10px 14px;
    border-radius: var(--border-radius-small);
    cursor: pointer;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.btn-back:hover { filter: brightness(0.95); }

.qiraat-info {
    min-width: 0;
}

#qiraatTitle {
    font-family: var(--font-arabic);
    font-size: 1.2rem;
    font-weight: 700;
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.qiraat-subtitle {
    margin: 2px 0 0 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.btn-sura-list {
    background: var(--success-color);
    color: #fff;
    border: none;
    padding: 10px 14px;
    border-radius: var(--border-radius-small);
    cursor: pointer;
    font-weight: 700;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-page-info {
    background: var(--info-color);
    color: #fff;
    border: none;
    padding: 10px 14px;
    border-radius: var(--border-radius-small);
    cursor: pointer;
    font-weight: 700;
    transition: var(--transition);
}

.sura-selector-inline {
    min-width: 160px;
}

.qiraat-switcher {
    min-width: 160px;
}

.sura-selector-select,
.qiraat-switcher-select {
    width: 100%;
    padding: 10px 12px;
    font-size: 0.95rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-small);
    background: var(--bg-card);
    color: var(--text-primary);
    cursor: pointer;
}

.viewer-controls {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.btn-control {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    width: 40px;
    height: 40px;
    border-radius: 12px;
    cursor: pointer;
    font-size: 1.1rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.btn-control:hover {
    background: var(--bg-hover);
}

/* Toolbar */
.toolbar {
    background: var(--bg-card);
    padding: 10px 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.toolbar-left, .toolbar-right { display: flex; gap: 8px; }

.toolbar-center {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex: 1;
}

.btn-nav, .btn-jump {
    background: var(--secondary-color);
    color: #fff;
    border: none;
    padding: 8px 12px;
    border-radius: var(--border-radius-small);
    cursor: pointer;
    font-weight: 700;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-nav:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.page-info {
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.page-input {
    width: 80px;
    padding: 8px 10px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-small);
    background: var(--bg-card);
    color: var(--text-primary);
    text-align: center;
}

/* PDF Area */
.pdf-viewer-wrapper {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 16px;
    position: relative;
}

.canvas-container {
    width: 100%;
    display: flex;
    justify-content: center;
}

#pdfCanvas {
    max-width: 100%;
    height: auto;
    background: #fff;
    box-shadow: var(--shadow-lg);
    border-radius: 10px;
}

.loading-spinner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.error-message {
    text-align: center;
    padding: 20px;
    color: var(--accent-color);
}

.btn-retry {
    margin-top: 10px;
    background: var(--accent-color);
    color: #fff;
    border: none;
    padding: 10px 14px;
    border-radius: var(--border-radius-small);
    cursor: pointer;
    font-weight: 700;
}

/* Panels */
.page-info-panel,
.sura-selector-panel {
    position: fixed;
    top: 72px;
    right: 12px;
    width: 380px;
    max-width: calc(100vw - 24px);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-xl);
    z-index: 1000;
    overflow: hidden;
}

.panel-header {
    background: var(--primary-color);
    color: #fff;
    padding: 12px 14px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.btn-close-panel {
    background: transparent;
    border: none;
    color: #fff;
    font-size: 1.4rem;
    cursor: pointer;
}

/* Info Grid */
.info-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin-bottom: 25px;
}

.info-item {
    background: var(--bg-secondary);
    padding: 15px;
    border-radius: var(--border-radius-small);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    border: 1px solid var(--border-color);
}

.info-item .label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 5px;
}

.info-item .value {
    font-family: var(--font-arabic);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-color);
}

/* Ayet List */
.ayet-list-section h4 {
    font-family: var(--font-arabic);
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--text-primary);
    border-bottom: 2px solid var(--secondary-color);
    padding-bottom: 8px;
    display: inline-block;
}

.ayet-list-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.ayet-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    padding: 15px;
    border-radius: var(--border-radius-small);
    transition: var(--transition);
}

.ayet-card:hover {
    border-color: var(--secondary-color);
    box-shadow: var(--shadow-sm);
}

/* Sura List Modern */
.search-wrapper {
    margin-bottom: 20px;
}

.search-input-modern {
    width: 100%;
    padding: 12px 20px;
    border-radius: var(--border-radius-full);
    border: 2px solid var(--border-color);
    background: var(--bg-primary);
    font-size: 1rem;
    transition: var(--transition);
}

.search-input-modern:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(26, 77, 46, 0.1);
}

.sura-list-modern {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.sura-card-mini {
    background: var(--bg-secondary);
    padding: 15px;
    border-radius: var(--border-radius-small);
    cursor: pointer;
    border: 1px solid transparent;
    transition: var(--transition);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sura-card-mini:hover {
    background: var(--bg-card);
    border-color: var(--secondary-color);
    transform: translateX(-5px);
}

.sura-card-mini .name {
    font-family: var(--font-arabic);
    font-size: 1.2rem;
    font-weight: 700;
}

.sura-card-mini .meta {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Zoom */
.zoom-controls {
    background: var(--bg-card);
    padding: 10px 12px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    border-top: 1px solid var(--border-color);
}

.btn-zoom {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    width: 44px;
    height: 44px;
    border-radius: 12px;
    cursor: pointer;
    font-size: 1.1rem;
}

.zoom-info {
    min-width: 60px;
    text-align: center;
    font-weight: 700;
}

/* Settings panel */
.settings-panel {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1100;
}

.settings-content {
    background: var(--bg-card);
    width: min(520px, calc(100vw - 24px));
    border-radius: var(--border-radius);
    padding: 20px;
    border: 1px solid var(--border-color);
}

/* Audio */
.audio-player-panel {
    margin: 10px 12px 0;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 12px;
}

.audio-controls {
    display: flex;
    align-items: center;
    gap: 12px;
}

.btn-audio {
    background: var(--secondary-color);
    color: #fff;
    border: none;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 800;
}

/* Mobile */
@media (max-width: 768px) {
    .viewer-header {
        flex-direction: column;
        align-items: stretch;
    }

    .header-left, .header-right {
        width: 100%;
        justify-content: space-between;
    }

    .btn-back .text { display: none; }

    /* two selects side-by-side */
    .header-selects {
        width: 100%;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 10px;
        align-items: stretch;
    }

    .sura-selector-inline,
    .qiraat-switcher {
        min-width: 0;
        width: 100%;
    }

    .sura-selector-select,
    .qiraat-switcher-select {
        width: 100%;
    }

    .viewer-controls {
        width: 100%;
        justify-content: space-between;
    }

    .toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .toolbar-left, .toolbar-right {
        justify-content: space-between;
    }

    .toolbar-center {
        order: -1;
        justify-content: center;
    }

    .page-info-panel,
    .sura-selector-panel {
        top: 0;
        right: 0;
        width: 100%;
        max-width: 100%;
        height: 100%;
        border-radius: 0;
    }
}

/* Mobile Menu Override */
.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 2000;
    backdrop-filter: blur(4px);
}

.mobile-menu-content {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: var(--bg-card);
    border-radius: 20px 20px 0 0;
    padding: 20px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    animation: slideUp 0.4s ease;
}

@keyframes slideUp {
    from { transform: translateY(100%); }
    to { transform: translateY(0); }
}

.mobile-menu-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    background: transparent;
    border: none;
    color: var(--text-primary);
}

.mobile-menu-item .menu-icon {
    font-size: 2rem;
}

#mobileMenuBtn {
    display: none;
}

/* ============================================
   Responsiveness
   ============================================ */

@media (max-width: 1024px) {
    .header-center {
        display: none;
    }
    
    #mobileMenuBtn {
        display: flex;
    }
    
    .viewer-toolbar {
        flex-direction: column;
        gap: 15px;
        padding: 15px;
    }
    
    .toolbar-section:not(.navigation) {
        display: none;
    }
    
    .navigation {
        width: 100%;
        justify-content: space-between;
    }
}

@media (max-width: 768px) {
    .page-info-panel,
    .sura-selector-panel {
        top: 0;
        right: 0;
        width: 100%;
        height: 100%;
        border-radius: 0;
    }
}