/* ==========================================================================
   CoralTech Cross-Browser PDF Viewer (PDF.js based)
   ========================================================================== */

.coral-pdf-viewer {
    --pdf-primary: var(--color-primary, #007731);
    --pdf-primary-hover: #005c26;
    --pdf-toolbar-bg: #1e242b;
    --pdf-toolbar-border: #2d3640;
    --pdf-sidebar-bg: #252c34;
    --pdf-viewport-bg: #525659;
    --pdf-text-light: #f1f3f5;
    --pdf-text-muted: #adb5bd;
    position: relative;
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 780px;
    background-color: var(--pdf-viewport-bg);
    border: 1px solid #d1d5db;
    border-radius: 6px;
    overflow: hidden;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    user-select: none;
}

/* Fullscreen & Pseudo-fullscreen (iOS Safari fallback) */
.coral-pdf-viewer:fullscreen,
.coral-pdf-viewer:-webkit-full-screen,
.coral-pdf-viewer.is-fullscreen {
    position: fixed !important;
    inset: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    height: 100dvh !important;
    max-width: none !important;
    max-height: none !important;
    z-index: 99999 !important;
    border-radius: 0 !important;
    border: none !important;
    margin: 0 !important;
}

body.coral-pdf-lock-scroll {
    overflow: hidden !important;
}

/* Toolbar */
.coral-pdf-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 6px;
    padding: 8px 14px;
    background-color: var(--pdf-toolbar-bg);
    border-bottom: 1px solid var(--pdf-toolbar-border);
    color: var(--pdf-text-light);
    z-index: 25;
    min-height: 50px;
}

.coral-pdf-toolbar-group {
    display: flex;
    align-items: center;
    gap: 4px;
}

.coral-pdf-divider {
    width: 1px;
    height: 20px;
    background-color: rgba(255, 255, 255, 0.15);
    margin: 0 4px;
}

/* Toolbar Buttons */
.coral-pdf-btn {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 6px;
    height: 32px !important;
    min-width: 32px;
    padding: 0 10px !important;
    margin: 0 !important;
    background: transparent;
    border: 1px solid transparent !important;
    border-radius: 5px !important;
    color: var(--pdf-text-light) !important;
    font-size: 13px !important;
    font-weight: 500 !important;
    line-height: 1 !important;
    cursor: pointer;
    transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
    text-decoration: none !important;
    box-shadow: none !important;
}

.coral-pdf-btn:hover:not(:disabled) {
    background-color: rgba(255, 255, 255, 0.12);
    color: #fff !important;
}

.coral-pdf-btn:active:not(:disabled) {
    background-color: rgba(255, 255, 255, 0.2);
}

.coral-pdf-btn.is-active {
    background-color: var(--pdf-primary) !important;
    color: #fff !important;
}

.coral-pdf-btn:disabled {
    opacity: 0.38;
    cursor: not-allowed;
}

.coral-pdf-btn-primary {
    background-color: var(--pdf-primary) !important;
    color: #fff !important;
    padding: 0 12px !important;
}

.coral-pdf-btn-primary:hover:not(:disabled) {
    background-color: var(--pdf-primary-hover) !important;
    color: #fff !important;
}

/* Page Counter & Input */
.coral-pdf-page-info {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--pdf-text-light);
    margin: 0 2px;
}

.coral-pdf-toolbar input.coral-pdf-page-input {
    width: 40px !important;
    height: 28px !important;
    min-height: 28px !important;
    padding: 0 4px !important;
    margin: 0 !important;
    text-align: center !important;
    background-color: #12161a !important;
    border: 1px solid #3c4652 !important;
    border-radius: 4px !important;
    color: #fff !important;
    font-size: 13px !important;
    font-weight: 600 !important;
    line-height: 26px !important;
    outline: none !important;
    box-shadow: none !important;
}

.coral-pdf-toolbar input.coral-pdf-page-input:focus {
    border-color: var(--pdf-primary) !important;
}

/* Custom Zoom Dropdown (immune to bootstrap-select) */
.coral-pdf-zoom-dropdown {
    position: relative;
    display: inline-flex;
    align-items: center;
}

.coral-pdf-zoom-trigger {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    gap: 8px;
    min-width: 118px;
    height: 30px !important;
    padding: 0 10px !important;
    margin: 0 !important;
    background-color: #12161a !important;
    border: 1px solid #3c4652 !important;
    border-radius: 4px !important;
    color: #fff !important;
    font-size: 13px !important;
    font-weight: 500 !important;
    line-height: 1 !important;
    cursor: pointer;
    outline: none !important;
    box-shadow: none !important;
    transition: border-color 0.15s ease, background-color 0.15s ease;
}

.coral-pdf-zoom-trigger:hover,
.coral-pdf-zoom-dropdown.is-open .coral-pdf-zoom-trigger {
    border-color: var(--pdf-primary) !important;
    background-color: #171c22 !important;
}

.coral-pdf-zoom-caret {
    font-size: 10px;
    color: var(--pdf-text-muted);
    transition: transform 0.15s ease;
}

.coral-pdf-zoom-dropdown.is-open .coral-pdf-zoom-caret {
    transform: rotate(180deg);
}

.coral-pdf-zoom-menu {
    position: absolute;
    top: calc(100% + 5px);
    left: 50%;
    transform: translateX(-50%);
    min-width: 140px;
    background-color: #1e242b;
    border: 1px solid #3c4652;
    border-radius: 6px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.45);
    padding: 4px;
    display: none;
    flex-direction: column;
    z-index: 100;
}

.coral-pdf-zoom-dropdown.is-open .coral-pdf-zoom-menu {
    display: flex;
}

.coral-pdf-zoom-option {
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    width: 100%;
    padding: 7px 10px !important;
    margin: 0 !important;
    background: transparent !important;
    border: none !important;
    border-radius: 4px !important;
    color: var(--pdf-text-light) !important;
    font-size: 13px !important;
    font-weight: 400 !important;
    text-align: left !important;
    cursor: pointer;
    transition: background-color 0.12s ease, color 0.12s ease;
}

.coral-pdf-zoom-option:hover {
    background-color: rgba(255, 255, 255, 0.1) !important;
    color: #fff !important;
}

.coral-pdf-zoom-option.is-selected {
    background-color: var(--pdf-primary) !important;
    color: #fff !important;
    font-weight: 600 !important;
}

/* Body Layout (Sidebar + Main Viewport) */
.coral-pdf-body {
    position: relative;
    display: flex;
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

/* Thumbnails Sidebar */
.coral-pdf-sidebar {
    width: 0;
    background-color: var(--pdf-sidebar-bg);
    border-right: 1px solid transparent;
    overflow-y: auto;
    overflow-x: hidden;
    transition: width 0.22s ease, border-color 0.22s ease;
    z-index: 15;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0;
    gap: 12px;
}

.coral-pdf-viewer.sidebar-open .coral-pdf-sidebar {
    width: 170px;
    padding: 14px 10px;
    border-right-color: var(--pdf-toolbar-border);
}

.coral-pdf-thumb-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    padding: 6px;
    border-radius: 4px;
    border: 2px solid transparent;
    transition: border-color 0.15s ease, background-color 0.15s ease;
    width: 100%;
}

.coral-pdf-thumb-item:hover {
    background-color: rgba(255, 255, 255, 0.08);
}

.coral-pdf-thumb-item.is-current {
    border-color: var(--pdf-primary);
    background-color: rgba(0, 119, 49, 0.18);
}

.coral-pdf-thumb-canvas-wrap {
    width: 110px;
    min-height: 140px;
    background: #fff;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.35);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.coral-pdf-thumb-canvas-wrap canvas {
    display: block;
    width: 100%;
    height: auto;
}

.coral-pdf-thumb-label {
    margin-top: 5px;
    font-size: 11px;
    color: var(--pdf-text-muted);
    font-weight: 600;
}

.coral-pdf-thumb-item.is-current .coral-pdf-thumb-label {
    color: #fff;
}

/* Main Viewport */
.coral-pdf-viewport {
    position: relative;
    flex: 1;
    overflow: auto;
    background-color: var(--pdf-viewport-bg);
    padding: 20px 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 18px;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
}

.coral-pdf-viewport.is-grabbing {
    cursor: grabbing !important;
    scroll-behavior: auto;
}

.coral-pdf-viewport.can-pan {
    cursor: grab;
}

/* Single Page Mode */
.coral-pdf-viewer.mode-single .coral-pdf-viewport {
    justify-content: flex-start;
}

.coral-pdf-viewer.mode-single .coral-pdf-page-wrapper:not(.is-active-page) {
    display: none !important;
}

/* Page Container */
.coral-pdf-page-wrapper {
    position: relative;
    background-color: #ffffff;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
    border-radius: 2px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    transition: opacity 0.15s ease;
}

.coral-pdf-page-wrapper canvas {
    display: block;
    width: 100%;
    height: 100%;
}

.coral-pdf-page-loader {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: #ffffff;
    color: #6c757d;
    font-size: 13px;
    gap: 8px;
    z-index: 2;
}

/* Link Annotations Overlay */
.coral-pdf-link-layer {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 3;
}

.coral-pdf-link-layer a {
    position: absolute;
    pointer-events: auto;
    cursor: pointer;
    border-radius: 2px;
    transition: background-color 0.15s ease;
}

.coral-pdf-link-layer a:hover {
    background-color: rgba(0, 119, 49, 0.15);
    outline: 1px solid rgba(0, 119, 49, 0.4);
}

/* Floating Navigation Arrows in Single Mode */
.coral-pdf-float-nav {
    display: none;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background-color: rgba(30, 36, 43, 0.78);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.2);
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 12;
    transition: background-color 0.15s ease, transform 0.15s ease;
}

.coral-pdf-viewer.mode-single .coral-pdf-float-nav {
    display: flex;
}

.coral-pdf-float-nav:hover:not(:disabled) {
    background-color: var(--pdf-primary);
}

.coral-pdf-float-nav:disabled {
    opacity: 0.25;
    cursor: not-allowed;
}

.coral-pdf-float-prev {
    left: 14px;
}

.coral-pdf-float-next {
    right: 14px;
}

/* Loading & Error Overlay */
.coral-pdf-overlay {
    position: absolute;
    inset: 0;
    background-color: rgba(30, 36, 43, 0.92);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 24px;
    text-align: center;
    color: #fff;
    z-index: 30;
}

.coral-pdf-overlay.is-hidden {
    display: none !important;
}

.coral-pdf-spinner {
    width: 44px;
    height: 44px;
    border: 4px solid rgba(255, 255, 255, 0.2);
    border-top-color: var(--pdf-primary);
    border-radius: 50%;
    animation: coral-pdf-spin 0.8s linear infinite;
    margin-bottom: 14px;
}

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

.coral-pdf-progress-track {
    width: 220px;
    height: 6px;
    background-color: rgba(255, 255, 255, 0.15);
    border-radius: 3px;
    overflow: hidden;
    margin-top: 10px;
}

.coral-pdf-progress-bar {
    width: 0%;
    height: 100%;
    background-color: var(--pdf-primary);
    transition: width 0.2s ease;
}

.coral-pdf-error-box {
    max-width: 460px;
    background: #252c34;
    border: 1px solid #3c4652;
    border-radius: 8px;
    padding: 24px;
}

.coral-pdf-error-box h5 {
    color: #fff;
    margin-bottom: 10px;
    font-size: 16px;
}

.coral-pdf-error-box p {
    color: var(--pdf-text-muted) !important;
    font-size: 13px !important;
    margin-bottom: 16px !important;
}

/* Responsive adjustments */
@media (max-width: 991px) {
    .coral-pdf-viewer {
        height: 620px;
    }
    .coral-pdf-hide-tablet {
        display: none !important;
    }
}

@media (max-width: 575px) {
    .coral-pdf-viewer {
        height: 500px;
    }
    .coral-pdf-toolbar {
        padding: 6px 8px;
        gap: 4px;
    }
    .coral-pdf-btn {
        height: 30px !important;
        min-width: 30px;
        padding: 0 6px !important;
        font-size: 12px !important;
    }
    .coral-pdf-zoom-trigger {
        min-width: 96px;
        height: 28px !important;
        padding: 0 8px !important;
        font-size: 12px !important;
    }
    .coral-pdf-hide-mobile {
        display: none !important;
    }
    .coral-pdf-viewport {
        padding: 10px 6px;
        gap: 10px;
    }
    .coral-pdf-viewer.sidebar-open .coral-pdf-sidebar {
        position: absolute;
        left: 0;
        top: 0;
        bottom: 0;
        width: 150px;
        box-shadow: 4px 0 16px rgba(0, 0, 0, 0.5);
    }
}