/*
 * CSS for Joomla PDF Flipbook Component
 */

.pdf-flipbook-wrapper {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    width: 100%;
    box-sizing: border-box;
}

/* Fullscreen Mode Styles */
.pdf-flipbook-wrapper.fullscreen-active {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    z-index: 999999 !important;
    border-radius: 0 !important;
    padding: 1rem !important;
    background-color: #1a1a1a !important;
    color: #ffffff;
}

.pdf-flipbook-wrapper.fullscreen-active .pdf-flipbook-controls {
    background: rgba(0, 0, 0, 0.6);
    border-color: rgba(255, 255, 255, 0.1);
    color: #ffffff;
}

.pdf-flipbook-wrapper.fullscreen-active .control-btn {
    color: rgba(255, 255, 255, 0.8);
}

.pdf-flipbook-wrapper.fullscreen-active .control-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
}

.pdf-flipbook-wrapper.fullscreen-active .control-indicator {
    color: #ffffff;
}

/* Loading Spinner */
.pdf-loading-spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    min-height: 300px;
}

.spinner-circle {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(0, 0, 0, 0.05);
    border-top: 3px solid #3b82f6;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.pdf-flipbook-wrapper.fullscreen-active .spinner-circle {
    border-color: rgba(255, 255, 255, 0.1);
    border-top-color: #60a5fa;
}

.spinner-text {
    margin-top: 1rem;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    font-size: 0.9rem;
    font-weight: 500;
    color: #6b7280;
}

.pdf-flipbook-wrapper.fullscreen-active .spinner-text {
    color: #9ca3af;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Container Structure */
.pdf-flipbook-container-outer {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto;
    overflow: auto;
}

.pdf-flipbook-container {
    display: none;
    margin: 0 auto;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
    border-radius: 4px;
    background-color: #ffffff;
}

/* Flipbook elements */
.stPageFlip {
    position: relative;
    overflow: hidden;
}

/* Pages style */
.page {
    position: relative;
    background-color: #ffffff;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    overflow: hidden;
}

/* Spine shadow for left pages (even) on their right edge */
.page:nth-child(even)::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 35px;
    height: 100%;
    background: linear-gradient(to left, rgba(0,0,0,0.15) 0%, rgba(0,0,0,0.06) 25%, rgba(0,0,0,0) 100%);
    pointer-events: none;
    z-index: 5;
}

/* Spine shadow for right pages (odd) on their left edge */
.page:nth-child(odd)::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 35px;
    height: 100%;
    background: linear-gradient(to right, rgba(0,0,0,0.15) 0%, rgba(0,0,0,0.06) 25%, rgba(0,0,0,0) 100%);
    pointer-events: none;
    z-index: 5;
}

/* Hard binding line in the center (runs on right edge of left pages) */
.page:nth-child(even)::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 1px;
    height: 100%;
    background: rgba(0, 0, 0, 0.22);
    pointer-events: none;
    z-index: 6;
}

.pdf-page-canvas {
    width: 100%;
    height: 100%;
    display: block;
    background-color: #ffffff;
}

/* Custom Controls with Glassmorphism */
.pdf-flipbook-controls {
    display: none;
    margin-top: 1.5rem;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: 30px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: background 0.3s;
    z-index: 10;
}

.control-btn {
    background: transparent;
    border: none;
    outline: none;
    color: #4b5563;
    padding: 0.4rem;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.control-btn:hover {
    background: rgba(0, 0, 0, 0.05);
    color: #1f2937;
    transform: scale(1.1);
}

.control-btn:active {
    transform: scale(0.95);
}

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

.control-divider {
    width: 1px;
    height: 18px;
    background-color: rgba(0, 0, 0, 0.1);
    margin: 0 0.5rem;
}

.pdf-flipbook-wrapper.fullscreen-active .control-divider {
    background-color: rgba(255, 255, 255, 0.15);
}

.control-indicator {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    font-size: 0.85rem;
    font-weight: 600;
    color: #374151;
    padding: 0 0.75rem;
    min-width: 60px;
    text-align: center;
    user-select: none;
}

.control-indicator .separator {
    color: #9ca3af;
    margin: 0 0.2rem;
}

.control-indicator .current-page {
    color: #3b82f6;
}

.pdf-flipbook-wrapper.fullscreen-active .control-indicator .current-page {
    color: #60a5fa;
}

/* Responsiveness adjustments */
@media (max-width: 768px) {
    .pdf-flipbook-wrapper {
        padding: 1rem;
    }
    
    .pdf-flipbook-controls {
        gap: 0.25rem;
        padding: 0.4rem 0.75rem;
    }
}