/* PDF Flipbook Public Styles */

.pdfb-container {
    position: relative;
    margin: 20px auto;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 60px -10px rgba(0,0,0,0.4);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: #fff;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    min-height: 300px;
}

.pdfb-container *,
.pdfb-container *:before,
.pdfb-container *:after {
    box-sizing: border-box;
}

.pdfb-error {
    padding: 20px;
    background: #fee;
    color: #c00;
    border-radius: 8px;
    text-align: center;
    border: 1px solid #fcc;
    font-family: sans-serif;
}

/* Loader */
.pdfb-loader {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 18px;
    padding: 60px 20px;
    min-height: 300px;
}

.pdfb-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255,255,255,0.15);
    border-top-color: #7cb729;
    border-radius: 50%;
    animation: pdfb-spin 0.9s linear infinite;
}

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

.pdfb-loader p {
    margin: 0;
    color: rgba(255,255,255,0.85);
    font-size: 14px;
    font-weight: 500;
}

.pdfb-progress {
    width: 220px;
    height: 4px;
    background: rgba(255,255,255,0.15);
    border-radius: 4px;
    overflow: hidden;
}

.pdfb-progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, #7cb729, #8fc73d);
    border-radius: 4px;
    transition: width 0.3s;
}

/* Viewer */
.pdfb-viewer {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
}

/* Toolbars */
.pdfb-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    background: rgba(0,0,0,0.35);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    flex-shrink: 0;
    z-index: 5;
}

.pdfb-toolbar-top {
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.pdfb-toolbar-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    justify-content: center;
    gap: 8px;
}

.pdfb-toolbar-left,
.pdfb-toolbar-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.pdfb-title {
    font-weight: 600;
    font-size: 14px;
    color: #fff;
    max-width: 60%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Buttons */
.pdfb-btn {
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.12);
    color: #fff;
    width: 38px;
    height: 38px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    padding: 0;
}

.pdfb-btn:hover {
    background: rgba(124,183,41,0.5);
    border-color: rgba(124,183,41,0.7);
    transform: translateY(-1px);
}

.pdfb-btn:active {
    transform: translateY(0);
}

.pdfb-btn svg {
    width: 18px;
    height: 18px;
}

/* Book area — width-driven, no fixed height */
.pdfb-book-area {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 24px 64px;
    min-height: 0;
}

.pdfb-book-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pdfb-book {
    visibility: hidden;
}

.pdfb-book.loaded {
    visibility: visible;
}

/* Page styling */
.pdfb-page {
    background: #fff;
    overflow: hidden;
    box-shadow: 0 0 20px rgba(0,0,0,0.3);
}

.pdfb-page img,
.pdfb-page canvas {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: contain;
}

/* Side navigation */
.pdfb-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0,0,0,0.5);
    border: 1px solid rgba(255,255,255,0.15);
    color: #fff;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    z-index: 10;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.pdfb-nav:hover {
    background: rgba(124,183,41,0.75);
    transform: translateY(-50%) scale(1.08);
}

.pdfb-nav svg {
    width: 22px;
    height: 22px;
}

.pdfb-nav-prev { left: 10px; }
.pdfb-nav-next { right: 10px; }

.pdfb-nav:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    transform: translateY(-50%);
}

/* Page indicator */
.pdfb-page-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,0.08);
    padding: 6px 14px;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.12);
    font-size: 13px;
    color: #fff;
    margin: 0 6px;
}

.pdfb-page-input {
    background: transparent;
    border: none;
    color: #fff;
    width: 38px;
    text-align: center;
    font-size: 13px;
    font-weight: 600;
    -moz-appearance: textfield;
    padding: 0;
}

.pdfb-page-input::-webkit-outer-spin-button,
.pdfb-page-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.pdfb-page-input:focus { outline: none; }

.pdfb-page-sep { opacity: 0.6; }

.pdfb-page-total { font-weight: 600; }

/* Fullscreen */
.pdfb-container.pdfb-fullscreen,
.pdfb-container:fullscreen {
    position: fixed !important;
    inset: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    margin: 0 !important;
    border-radius: 0 !important;
    z-index: 999999 !important;
}

.pdfb-container:fullscreen .pdfb-book-area,
.pdfb-container.pdfb-fullscreen .pdfb-book-area {
    padding: 30px 80px;
}

/* Responsive */
@media (max-width: 768px) {
    .pdfb-toolbar { padding: 10px 12px; }
    .pdfb-title { font-size: 12px; }
    .pdfb-btn { width: 34px; height: 34px; }
    .pdfb-btn svg { width: 16px; height: 16px; }
    .pdfb-nav { width: 38px; height: 38px; }
    .pdfb-nav-prev { left: 6px; }
    .pdfb-nav-next { right: 6px; }
    .pdfb-book-area { padding: 15px 50px; }
}