/**
 * Premium Flip PDF Builder - Controls & UI Modals CSS
 * FlipSnack-style bottom toolbar, scrubber slider, and modals.
 *
 * @package PremiumFlipPDF
 */

/* ==========================================================================
   Bottom Control Toolbar
   ========================================================================== */
/* ==========================================================================
   Bottom Control Toolbar
   ========================================================================== */
.pfpf-toolbar {
    position: relative;
    height: 52px;
    background: var(--pfpf-toolbar-bg);
    border-top: 1px solid var(--pfpf-toolbar-border);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 40;
    flex-shrink: 0;
    box-sizing: border-box;
    transition: transform var(--pfpf-transition-speed) ease, opacity var(--pfpf-transition-speed) ease;
}

.pfpf-toolbar.pfpf-toolbar-hidden {
    transform: translateY(100%);
    opacity: 0;
    pointer-events: none;
}

.pfpf-toolbar-left,
.pfpf-toolbar-center,
.pfpf-toolbar-right {
    display: flex;
    align-items: center;
    height: 100%;
    flex-wrap: nowrap;
}

.pfpf-toolbar-left {
    gap: 8px;
    flex-shrink: 0;
    min-width: 140px;
}

.pfpf-toolbar-center {
    flex: 1;
    max-width: 420px;
    margin: 0 24px;
    position: relative;
    justify-content: center;
}

.pfpf-toolbar-right {
    gap: 6px;
    flex-shrink: 0;
    justify-content: flex-end;
}

/* Page Counter */
.pfpf-page-counter {
    font-size: 13px;
    font-weight: 500;
    color: var(--pfpf-toolbar-text);
    white-space: nowrap;
    letter-spacing: 0.4px;
    user-select: none;
    line-height: 1;
    padding: 0 4px;
}

/* Scrubber / Slider */
.pfpf-slider-wrapper {
    position: relative;
    width: 100%;
    display: flex;
    align-items: center;
    height: 100%;
}

.pfpf-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 5px;
    border-radius: 3px;
    background: linear-gradient(to right, var(--pfpf-accent) var(--slider-fill, 0%), rgba(255, 255, 255, 0.2) var(--slider-fill, 0%));
    outline: none;
    cursor: pointer;
    margin: 0;
    padding: 0;
    border: none;
    box-sizing: border-box;
    transition: background 0.1s ease;
}

.pfpf-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #ffffff;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4);
    cursor: pointer;
    transition: transform 0.15s ease, background 0.15s ease;
}

.pfpf-slider::-webkit-slider-thumb:hover {
    transform: scale(1.3);
    background: var(--pfpf-accent-hover);
}

.pfpf-slider::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: #ffffff;
    border: none;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4);
    cursor: pointer;
}

/* Floating Slider Tooltip */
.pfpf-slider-tooltip {
    position: absolute;
    bottom: 34px;
    transform: translateX(-50%);
    background: rgba(15, 18, 26, 0.95);
    color: #ffffff;
    font-size: 11px;
    font-weight: 600;
    padding: 4px 8px;
    border-radius: 4px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    pointer-events: none;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.15s ease, visibility 0.15s ease;
    white-space: nowrap;
    z-index: 50;
}

.pfpf-slider-tooltip.pfpf-active {
    opacity: 1;
    visibility: visible;
}

/* Toolbar Buttons */
.pfpf-btn {
    position: relative;
    width: 36px !important;
    height: 36px !important;
    min-width: 36px !important;
    min-height: 36px !important;
    max-width: 36px !important;
    max-height: 36px !important;
    border-radius: 6px !important;
    border: none !important;
    background: transparent !important;
    color: var(--pfpf-toolbar-text, #cbd5e1) !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    cursor: pointer !important;
    padding: 0 !important;
    margin: 0 !important;
    box-sizing: border-box !important;
    line-height: 1 !important;
    text-decoration: none !important;
    box-shadow: none !important;
    flex-shrink: 0 !important;
    transition: background 0.15s ease, color 0.15s ease, transform 0.1s ease;
}

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

.pfpf-btn:active:not(:disabled) {
    transform: scale(0.94);
}

.pfpf-btn:disabled {
    opacity: 0.3 !important;
    cursor: not-allowed !important;
}

.pfpf-btn.pfpf-active {
    background: var(--pfpf-accent) !important;
    color: #ffffff !important;
}

.pfpf-viewer .pfpf-toolbar .pfpf-btn svg,
.pfpf-viewer .pfpf-btn svg,
.pfpf-btn svg {
    width: 18px !important;
    height: 18px !important;
    min-width: 18px !important;
    min-height: 18px !important;
    max-width: 18px !important;
    max-height: 18px !important;
    display: block !important;
    margin: auto !important;
    fill: currentColor !important;
    stroke: none !important;
    flex-shrink: 0 !important;
    visibility: visible !important;
    opacity: 1 !important;
    overflow: visible !important;
}

/* Grouped Zoom Controls */
.pfpf-zoom-group {
    display: inline-flex;
    align-items: center;
    gap: 1px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 6px;
    padding: 2px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-sizing: border-box;
    height: 36px;
}

.pfpf-zoom-group .pfpf-btn {
    width: 30px !important;
    height: 30px !important;
    min-width: 30px !important;
    min-height: 30px !important;
}

.pfpf-zoom-badge {
    font-size: 11px;
    font-weight: 600;
    color: var(--pfpf-toolbar-text);
    padding: 0 4px;
    user-select: none;
    line-height: 1;
    white-space: nowrap;
    display: inline-block;
}

/* Button Tooltips (Desktop) */
.pfpf-btn[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 44px;
    left: 50%;
    transform: translateX(-50%) translateY(4px);
    background: rgba(15, 18, 26, 0.95);
    color: #ffffff;
    font-size: 11px;
    font-weight: 500;
    padding: 4px 8px;
    border-radius: 4px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.15s ease, transform 0.15s ease;
    z-index: 60;
}

.pfpf-btn[data-tooltip]:hover::after {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* ==========================================================================
   Modals Common Architecture
   ========================================================================== */
.pfpf-modal {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 12, 18, 0.75);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 80;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s ease;
}

.pfpf-modal.pfpf-modal-visible {
    opacity: 1;
    visibility: visible;
}

.pfpf-modal-dialog {
    background: #181b24;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 12px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform: scale(0.95);
    transition: transform 0.25s cubic-bezier(0.2, 0, 0, 1);
    color: #f1f5f9;
}

.pfpf-modal.pfpf-modal-visible .pfpf-modal-dialog {
    transform: scale(1);
}

.pfpf-modal-header {
    padding: 16px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.pfpf-modal-title {
    font-size: 16px;
    font-weight: 600;
    color: #ffffff;
    margin: 0;
}

.pfpf-modal-close {
    background: transparent;
    border: none;
    color: var(--pfpf-toolbar-muted);
    cursor: pointer;
    font-size: 20px;
    line-height: 1;
    padding: 4px;
    border-radius: 4px;
    transition: color 0.15s ease;
}

.pfpf-modal-close:hover {
    color: #ffffff;
}

.pfpf-modal-body {
    padding: 20px;
    overflow-y: auto;
    max-height: 65vh;
}

/* ==========================================================================
   Thumbnail Grid Modal
   ========================================================================== */
.pfpf-modal-thumbnails .pfpf-modal-dialog {
    width: 90%;
    max-width: 900px;
    height: 80%;
}

.pfpf-thumbnail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 16px;
}

.pfpf-thumb-item {
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    border-radius: 6px;
    padding: 8px;
    background: rgba(255, 255, 255, 0.03);
    border: 2px solid transparent;
    transition: all 0.2s ease;
}

.pfpf-thumb-item:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-2px);
}

.pfpf-thumb-item.pfpf-active {
    border-color: var(--pfpf-accent);
    background: rgba(59, 130, 246, 0.15);
}

.pfpf-thumb-preview {
    position: relative;
    width: 100%;
    aspect-ratio: 0.707;
    background: #232733;
    border-radius: 4px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.pfpf-thumb-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.pfpf-thumb-img.pfpf-loaded {
    opacity: 1;
}

.pfpf-thumb-spinner {
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.15);
    border-top-color: var(--pfpf-accent);
    border-radius: 50%;
    animation: pfpf-spin 0.8s linear infinite;
}

.pfpf-thumb-label {
    margin-top: 8px;
    font-size: 12px;
    font-weight: 500;
    color: var(--pfpf-toolbar-muted);
}

.pfpf-thumb-item.pfpf-active .pfpf-thumb-label {
    color: var(--pfpf-accent-hover);
    font-weight: 600;
}

/* ==========================================================================
   Search Modal
   ========================================================================== */
.pfpf-modal-search .pfpf-modal-dialog {
    width: 90%;
    max-width: 540px;
}

.pfpf-search-input-wrapper {
    position: relative;
    margin-bottom: 16px;
}

.pfpf-search-input {
    width: 100%;
    height: 44px;
    background: #0f121a;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 8px;
    padding: 0 16px;
    font-size: 14px;
    color: #ffffff;
    outline: none;
    transition: border-color 0.15s ease;
}

.pfpf-search-input:focus {
    border-color: var(--pfpf-accent);
}

.pfpf-search-count {
    font-size: 12px;
    color: var(--pfpf-toolbar-muted);
    margin-bottom: 12px;
}

.pfpf-search-results {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 45vh;
    overflow-y: auto;
}

.pfpf-search-item {
    background: rgba(255, 255, 255, 0.04);
    border-radius: 6px;
    padding: 12px 14px;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.15s ease;
}

.pfpf-search-item:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(59, 130, 246, 0.4);
}

.pfpf-search-item-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 6px;
}

.pfpf-search-page-badge {
    font-size: 11px;
    font-weight: 600;
    background: var(--pfpf-accent);
    color: #ffffff;
    padding: 2px 6px;
    border-radius: 4px;
}

.pfpf-search-occurrences {
    font-size: 11px;
    color: var(--pfpf-toolbar-muted);
}

.pfpf-search-snippet {
    font-size: 13px;
    color: #cbd5e1;
    line-height: 1.4;
}

.pfpf-search-mark {
    background: rgba(234, 179, 8, 0.4);
    color: #ffffff;
    padding: 1px 3px;
    border-radius: 2px;
}

.pfpf-search-empty,
.pfpf-search-loading {
    text-align: center;
    padding: 30px;
    font-size: 13px;
    color: var(--pfpf-toolbar-muted);
}

/* ==========================================================================
   Share Modal
   ========================================================================== */
.pfpf-modal-share .pfpf-modal-dialog {
    width: 90%;
    max-width: 480px;
}

.pfpf-share-copy-box {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}

.pfpf-share-url {
    flex: 1;
    height: 40px;
    background: #0f121a;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 6px;
    padding: 0 12px;
    font-size: 13px;
    color: #cbd5e1;
    outline: none;
}

.pfpf-btn-copy {
    padding: 0 16px;
    background: var(--pfpf-accent);
    color: #ffffff;
    border: none;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s ease;
}

.pfpf-btn-copy:hover {
    background: var(--pfpf-accent-hover);
}

.pfpf-copy-feedback {
    font-size: 12px;
    color: #10b981;
    margin-bottom: 16px;
    min-height: 16px;
}

.pfpf-share-social-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

.pfpf-share-social-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 12px 8px;
    background: rgba(255, 255, 255, 0.04);
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: #ffffff;
    text-decoration: none;
    font-size: 12px;
    font-weight: 500;
    transition: all 0.15s ease;
    cursor: pointer;
}

.pfpf-share-social-btn:hover {
    background: rgba(255, 255, 255, 0.12);
    transform: translateY(-2px);
}

.pfpf-share-social-btn svg {
    width: 22px;
    height: 22px;
    margin-bottom: 6px;
    fill: currentColor;
}

/* ==========================================================================
   Mobile Action Drawer
   ========================================================================== */
.pfpf-mobile-drawer {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: #161a23;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    border-top-left-radius: 16px;
    border-top-right-radius: 16px;
    padding: 20px;
    z-index: 90;
    transform: translateY(100%);
    transition: transform 0.25s cubic-bezier(0.2, 0, 0, 1);
    box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.5);
}

.pfpf-mobile-drawer.pfpf-drawer-visible {
    transform: translateY(0);
}

.pfpf-drawer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.pfpf-drawer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.pfpf-drawer-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    background: rgba(255, 255, 255, 0.05);
    border: none;
    border-radius: 8px;
    padding: 12px 6px;
    color: #ffffff;
    font-size: 11px;
    cursor: pointer;
}

.pfpf-drawer-item svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}