/**
 * FuelGuard Flipbook Widget Styles
 */

/* ===== MAIN CONTAINER ===== */
.fg-flipbook {
    position: relative;
    width: 100%;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    user-select: none;
}

/* ===== SELECTOR SCREEN ===== */
.fg-flipbook-selector {
    padding: 30px 20px;
}

.fg-flipbook-selector-header {
    text-align: center;
    margin-bottom: 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.fg-flipbook-selector-icon {
    font-size: 3rem;
}

.fg-flipbook-selector-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
}

.fg-flipbook-grid {
    display: grid;
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.fg-flipbook-card {
    background: #1a1a2e;
    border-radius: 16px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    flex-direction: column;
}

.fg-flipbook-card:hover {
    transform: translateY(-4px);
    background: #16213e;
    border-color: rgba(102, 126, 234, 0.3);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.fg-flipbook-card-thumb {
    width: 100%;
    height: 200px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
}

.fg-flipbook-card-thumb::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, transparent 60%, rgba(0, 0, 0, 0.4));
}

.fg-flipbook-card-thumb-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1a1a2e, #16213e);
}

.fg-flipbook-card-thumb-placeholder span {
    font-size: 4rem;
    opacity: 0.5;
}

.fg-flipbook-card-body {
    padding: 16px 20px;
    flex: 1;
}

.fg-flipbook-card-title {
    font-size: 1.05rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 6px;
}

.fg-flipbook-card-desc {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.5;
}

.fg-flipbook-card-action {
    padding: 12px 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    text-align: center;
}

.fg-flipbook-card-action span {
    font-size: 0.85rem;
    color: #667eea;
    font-weight: 500;
    transition: color 0.2s;
}

.fg-flipbook-card:hover .fg-flipbook-card-action span {
    color: #8b9cf7;
}

/* ===== LOADING SCREEN ===== */
.fg-flipbook-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 18px;
    padding: 80px 20px;
    min-height: 400px;
}

.fg-flipbook-spinner {
    width: 44px;
    height: 44px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top-color: #667eea;
    border-radius: 50%;
    animation: fg-spin 0.7s linear infinite;
}

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

.fg-flipbook-load-txt {
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.95rem;
}

.fg-flipbook-prog {
    width: 260px;
    height: 4px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 2px;
    overflow: hidden;
}

.fg-flipbook-prog-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, #667eea, #764ba2);
    border-radius: 2px;
    transition: width 0.25s;
}

/* ===== VIEWER ===== */
.fg-flipbook-viewer {
    display: flex;
    flex-direction: column;
    height: var(--fg-book-height, 85vh);
    min-height: 400px;
    background: #111;
    position: relative;
    border-radius: 12px;
    overflow: hidden;
}

/* ===== TOOLBAR ===== */
.fg-flipbook-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 16px;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(8px);
    z-index: 50;
    min-height: 48px;
    flex-shrink: 0;
}

.fg-flipbook-toolbar-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.fg-flipbook-toolbar-right {
    display: flex;
    align-items: center;
    gap: 6px;
}

.fg-flipbook-doc-name {
    color: #fff;
    font-size: 0.9rem;
    font-weight: 600;
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.fg-tbtn {
    background: rgba(102, 126, 234, 0.15);
    color: rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(102, 126, 234, 0.2);
    padding: 6px 14px;
    font-size: 0.78rem;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.2s;
    white-space: nowrap;
}

.fg-tbtn:hover {
    background: rgba(102, 126, 234, 0.3);
    color: #fff;
}

.fg-back-btn {
    background: rgba(255, 255, 255, 0.07);
    border-color: rgba(255, 255, 255, 0.1);
}

.fg-back-btn:hover {
    background: rgba(255, 255, 255, 0.15);
}

/* ===== BOOK AREA ===== */
.fg-flipbook-book-area {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.fg-flipbook-container {
    margin: auto;
}

/* StPageFlip page styles */
.fg-flipbook-page {
    background: #fff;
    overflow: hidden;
}

.fg-flipbook-page canvas {
    width: 100% !important;
    height: 100% !important;
    display: block;
}

/* StPageFlip parent override */
.fg-flipbook-book-area .stf__parent {
    margin: auto;
}

/* ===== BOTTOM BAR ===== */
.fg-flipbook-bottombar {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px 16px;
    gap: 14px;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(8px);
    z-index: 50;
    flex-shrink: 0;
}

.fg-nbtn {
    background: rgba(102, 126, 234, 0.12);
    color: #fff;
    border: 1px solid rgba(102, 126, 234, 0.2);
    padding: 9px 18px;
    font-size: 0.85rem;
    cursor: pointer;
    border-radius: 9px;
    transition: all 0.2s;
    font-weight: 500;
}

.fg-nbtn:hover:not(:disabled) {
    background: rgba(102, 126, 234, 0.3);
}

.fg-nbtn:disabled {
    opacity: 0.25;
    cursor: not-allowed;
}

.fg-flipbook-pginfo {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.85rem;
    min-width: 70px;
    text-align: center;
}

.fg-flipbook-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 180px;
    height: 3px;
    background: rgba(255, 255, 255, 0.12);
    border-radius: 2px;
    outline: none;
    cursor: pointer;
}

.fg-flipbook-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    background: #667eea;
    border-radius: 50%;
    cursor: pointer;
}

.fg-flipbook-slider::-moz-range-thumb {
    width: 14px;
    height: 14px;
    background: #667eea;
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

/* ===== THUMBNAILS ===== */
.fg-flipbook-thumbs {
    position: absolute;
    left: 0;
    top: 48px;
    bottom: 52px;
    width: 140px;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    z-index: 100;
    overflow-y: auto;
    padding: 8px;
    display: none;
    flex-direction: column;
    gap: 5px;
    border-right: 1px solid rgba(255, 255, 255, 0.08);
}

.fg-flipbook-thumbs.open {
    display: flex;
}

.fg-flipbook-thumbs::-webkit-scrollbar {
    width: 3px;
}

.fg-flipbook-thumbs::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 2px;
}

.fg-flipbook-th {
    cursor: pointer;
    border: 2px solid transparent;
    border-radius: 3px;
    overflow: hidden;
    position: relative;
    flex-shrink: 0;
    transition: border-color 0.2s;
}

.fg-flipbook-th:hover {
    border-color: rgba(255, 255, 255, 0.35);
}

.fg-flipbook-th.act {
    border-color: #667eea;
}

.fg-flipbook-th canvas {
    width: 100%;
    display: block;
}

.fg-flipbook-tn {
    position: absolute;
    bottom: 2px;
    right: 3px;
    background: rgba(0, 0, 0, 0.7);
    color: #fff;
    font-size: 0.55rem;
    padding: 1px 4px;
    border-radius: 2px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .fg-flipbook-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 12px;
    }

    .fg-flipbook-card-thumb {
        height: 140px;
    }

    .fg-flipbook-selector {
        padding: 20px 12px;
    }

    .fg-flipbook-selector-title {
        font-size: 1.2rem;
    }

    .fg-flipbook-toolbar {
        padding: 6px 10px;
    }

    .fg-tbtn {
        padding: 5px 10px;
        font-size: 0.72rem;
    }

    .fg-flipbook-doc-name {
        max-width: 120px;
        font-size: 0.8rem;
    }

    .fg-flipbook-slider {
        width: 100px;
    }

    .fg-nbtn {
        padding: 7px 12px;
        font-size: 0.78rem;
    }

    .fg-flipbook-thumbs {
        width: 100px;
    }

    .fg-flipbook:not(:fullscreen):not(:-webkit-full-screen) .fg-flipbook-viewer {
        height: 65vh !important;
        min-height: 350px !important;
    }
}

@media (max-width: 480px) {
    .fg-flipbook-grid {
        grid-template-columns: 1fr !important;
    }

    .fg-flipbook-card-thumb {
        height: 180px;
    }

    .fg-flipbook-toolbar-right .fg-tbtn span {
        display: none;
    }

    .fg-flipbook-slider {
        width: 70px;
    }

    .fg-flipbook:not(:fullscreen):not(:-webkit-full-screen) .fg-flipbook-viewer {
        height: 60vh !important;
        min-height: 300px !important;
    }
}

/* ===== FULLSCREEN MODE ===== */
.fg-flipbook:fullscreen,
.fg-flipbook:-webkit-full-screen {
    background: #111;
}

.fg-flipbook:fullscreen .fg-flipbook-viewer,
.fg-flipbook:-webkit-full-screen .fg-flipbook-viewer {
    height: 100vh;
    border-radius: 0;
}