:root {
    --primary: #1a4731;
    --secondary: #2d6a4f;
    --accent: #40916c;
    --gold: #d4a373;
    --cream: #faf6f1;
    --dark: #1b4332;
    --background: #f8f9fa;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --card-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --text-tertiary: var(--gold);
    --text: #2d3748;
}

@keyframes shimmer {
    0% { background-position: -1000px 0; }
    100% { background-position: 1000px 0; }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes scaleIn {
    from { transform: scale(0.95); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

@keyframes slideInRight {
    from { transform: translateX(30px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

@keyframes floating {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0px); }
}

@keyframes gradientBG {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes glowPulse {
    0% { box-shadow: 0 0 5px rgba(212, 163, 115, 0.2); }
    50% { box-shadow: 0 0 20px rgba(212, 163, 115, 0.4); }
    100% { box-shadow: 0 0 5px rgba(212, 163, 115, 0.2); }
}

@keyframes ripple {
    0% { box-shadow: 0 0 0 0 rgba(26, 71, 49, 0.3); }
    70% { box-shadow: 0 0 0 20px rgba(26, 71, 49, 0); }
    100% { box-shadow: 0 0 0 0 rgba(26, 71, 49, 0); }
}

@keyframes slideInUp {
    from { transform: translateY(100%); }
    to { transform: translateY(0); }
}

@keyframes skeletonLoading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background: var(--background);
    background-image: 
        radial-gradient(circle at 100% 150%, var(--background) 24%, rgba(26, 71, 49, 0.05) 25%, transparent 40%),
        radial-gradient(circle at 0 150%, var(--background) 24%, rgba(26, 71, 49, 0.05) 25%, transparent 40%),
        radial-gradient(circle at 50% 100%, var(--background) 10%, rgba(26, 71, 49, 0.05) 11%, transparent 40%),
        radial-gradient(circle at 100% 50%, var(--background) 5%, rgba(26, 71, 49, 0.05) 6%, transparent 40%);
    background-size: 100px 50px;
    font-family: system-ui, sans-serif;
    min-height: 100vh;
    padding: 1.5rem;
    color: var(--text);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

header {
    background: linear-gradient(120deg, var(--cream), #f8f9fa, var(--cream));
    background-size: 200% 200%;
    animation: gradientBG 15s ease infinite, scaleIn 0.8s ease-out;
    border-radius: 1rem;
    padding: 1rem;
    text-align: center;
    box-shadow: var(--card-shadow);
    margin-bottom: 1rem;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(212, 163, 115, 0.1);
}

header::before,
header::after {
    content: '';
    position: absolute;
    width: 200px;
    height: 200px;
    background: linear-gradient(45deg, var(--gold), transparent);
    border-radius: 50%;
    opacity: 0.1;
}

header::before { top: -100px; left: -100px; }
header::after { bottom: -100px; right: -100px; }

.header-ornament {
    position: absolute;
    top: 0; left: 0; right: 0; height: 8px;
    background: linear-gradient(90deg, transparent, var(--gold), transparent);
    opacity: 0.8;
    animation: shimmer 3s infinite linear;
}

header .search-input {
    padding-left: 50px !important; 
    height: 54px;
    font-weight: 500;
}

header .search-select {
    flex: 1;
    height: 54px;
    cursor: pointer;
    font-weight: 600;
    color: var(--primary);
    appearance: none;
    background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%231a4731%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E");
    background-repeat: no-repeat;
    background-position: right 18px top 50%;
    background-size: 14px auto;
    padding-right: 45px;
}

h1 {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, .05);
    position: relative;
    display: inline-block;
    animation: floating 3s ease-in-out infinite;
}

h1::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--gold), transparent);
}

.tagline {
    font-size: 1.2rem;
    color: var(--secondary);
    margin-bottom: 2rem;
    font-weight: 500;
}

.search-container {
    display: flex;
    gap: 1rem;
    max-width: 800px;
    margin: 2rem auto 1rem;
    background: transparent;
    box-shadow: none;
}

.search-container:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, .08);
}

.search-input, 
.search-select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid rgba(26, 71, 49, 0.15); 
    border-radius: 12px;
    background-color: #ffffff; 
    color: var(--text);
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.02); 
}

.search-input:focus, 
.search-select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(64, 145, 108, 0.15), 0 4px 12px rgba(0, 0, 0, 0.05);
    transform: translateY(-1px);
    background-color: #ffffff;
}

.search-wrapper {
    position: relative;
    flex: 2;
}

.search-input {
    width: 100%;
    padding-left: 3rem;
    animation: pulse 1s;
}

.search-icon {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--primary);
    font-size: 1.2rem;
    opacity: 0.7;
    pointer-events: none; 
}

.book-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
}

.book-card {
    background: var(--cream);
    border-radius: 1rem;
    padding: 0;
    border: 1px solid rgba(212, 163, 115, 0.1);
    position: relative;
    box-shadow: var(--card-shadow);
    animation: fadeIn 0.6s ease-out backwards;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.book-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 15px 35px rgba(0, 0, 0, .1);
    animation: glowPulse 2s infinite;
}

.book-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--gold));
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 10;
}

.book-card:hover::before {
    opacity: 1;
}

.book-content {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.book-cover {
    height: 180px;
    width: 100%;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    text-align: center;
    position: relative;
    transition: transform 0.3s ease;
    border-radius: 0;
    border-bottom: 3px solid var(--gold);
}

.book-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: transform 0.5s ease;
}

.book-card:hover .book-cover img {
    transform: scale(1.05);
}

.book-cover::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0);
    transition: background 0.3s ease;
    pointer-events: none;
}

.book-card:hover .book-cover::after {
    background: rgba(0, 0, 0, 0.1);
}

.book-cover::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(120deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: 0.5s;
    z-index: 2;
}

.book-card:hover .book-cover::before {
    left: 100%;
}

.book-title {
    color: var(--primary);
    margin: 0 0 0.5rem 0;
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.4;
}

.book-author,
.book-translator {
    color: var(--secondary);
    font-size: 0.9rem;
    opacity: 0.9;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.book-desc {
    font-size: 0.9rem;
    line-height: 1.6;
    margin: 1rem 0;
    color: #4a5568;
}

.book-actions, .card-actions-grid {
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
    margin-top: auto;
}

.secondary-actions {
    display: flex;
    gap: 10px;
    width: 100%;
}

.btn {
    padding: 0.6rem 1rem;
    border-radius: 0.75rem;
    color: white;
    text-decoration: none;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.85rem;
    flex: 1;
    justify-content: center;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
    white-space: nowrap;
    border: none;
    cursor: pointer;
}

.btn.full-width {
    width: 100%;
}

.btn::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.1), transparent);
    transform: rotate(45deg);
    transition: 0.5s all ease;
}

.btn:hover::after {
    transform: rotate(45deg) translate(100%, 100%);
}

.btn:hover {
    transform: translateY(-2px) scale(1.02);
}

.btn-read {
    background: var(--primary);
    box-shadow: 0 4px 15px rgba(26, 71, 49, 0.2);
}

.btn-download {
    background: var(--accent);
    box-shadow: 0 4px 15px rgba(64, 145, 108, 0.2);
}

.btn-share {
    background: #e2e8f0;
    color: #4a5568;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.btn-share:hover {
    background: #cbd5e1;
    color: #1a202c;
}

.floating-buttons {
    position: fixed;
    right: 20px;
    bottom: 20px;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 15px;
    z-index: 1000;
}

.floating-btn.extended {
    width: auto;
    height: 50px;
    border-radius: 25px;
    padding: 0 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 0.95rem;
    border: none;
    font-family: inherit;
    cursor: pointer;
    text-decoration: none;
}

.floating-btn.extended span {
    display: inline-block;
}

.floating-btn.extended:not(.btn-upload-fab) {
    background-color: white;
    color: var(--primary);
    border: 2px solid var(--primary);
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    animation: slideInRight 0.8s ease-out;
}

.btn-upload-fab {
    background-color: var(--primary);
    color: white;
    box-shadow: 0 6px 15px rgba(26, 71, 49, 0.4);
    animation: slideInRight 0.8s ease-out;
}

.btn-upload-fab:hover {
    background-color: var(--accent);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(26, 71, 49, 0.6);
}

.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: var(--cream);
    margin: 15% auto;
    padding: 40px;
    border: 1px solid rgba(212, 163, 115, 0.2);
    width: 80%;
    max-width: 600px;
    text-align: center;
    position: relative;
    transform-origin: center;
    animation: scaleIn 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    border-radius: 1rem;
    box-shadow: var(--card-shadow);
}

.submit-btn {
    background-color: var(--primary);
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    text-decoration: none;
    transition: var(--transition);
}

.submit-btn:hover {
    background-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

h2 {
    color: var(--primary);
    margin-bottom: 1.5rem;
}

p {
    margin: 10px 0;
    line-height: 1.6;
}

.close-modal-btn {
    font-size: 24px;
    color: var(--primary);
    background-color: rgba(250, 246, 241, 0.9);
    border-radius: 50%;
    padding: 5px;
    cursor: pointer;
    position: absolute;
    top: 10px;
    right: 10px;
    transition: var(--transition);
    z-index: 10;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.close-modal-btn:hover {
    background-color: rgba(212, 163, 115, 0.6);
    transform: rotate(90deg);
}

.skeleton {
    background: linear-gradient(90deg, #e2e8f0 25%, #cbd5e1 50%, #e2e8f0 75%);
    background-size: 200% 100%;
    animation: skeletonLoading 1.5s infinite;
    border-radius: 0.5rem;
}

.skeleton-cover { height: 180px; width: 100%; border-radius: 0; border-bottom: 3px solid #cbd5e1; }
.skeleton-title { height: 1.5rem; width: 80%; margin: 1.5rem 1.5rem 0.5rem; }
.skeleton-text { height: 1rem; width: calc(100% - 3rem); margin: 0 1.5rem 0.5rem; }
.skeleton-text.short { width: 60%; }
.skeleton-btn-container { display: flex; gap: 1rem; margin: auto 1.5rem 1.5rem; flex-direction: column; }
.skeleton-btn { height: 2.5rem; width: 100%; border-radius: 0.75rem; }

.book-pending {
    filter: grayscale(100%);
    opacity: 0.6;
    border: 2px dashed var(--secondary);
}

.book-pending .book-cover {
    background: #64748b; 
}

.book-badge-pending {
    position: absolute;
    top: 10px;
    right: 10px;
    background: #ef4444; 
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: bold;
    z-index: 20;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.btn-disabled {
    background: #94a3b8 !important;
    cursor: not-allowed;
    pointer-events: none;
    box-shadow: none !important;
}

.book-correction {
    filter: sepia(30%);
    border: 2px dashed #f59e0b; 
}

.book-badge-correction {
    position: absolute;
    top: 10px;
    right: 10px;
    background: #f59e0b;
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: bold;
    z-index: 20;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.form-group { margin-bottom: 1rem; text-align: left; }
.form-group label { display: block; margin-bottom: 0.5rem; color: var(--primary); font-weight: bold; }

.reader-content {
    width: 100% !important;
    height: 100vh !important;
    margin: 0 !important;
    padding: 0 !important;
    max-height: none !important;
    border-radius: 0 !important;
    display: flex;
    flex-direction: column;
    background-color: #f1f5f9;
}

.pdf-toolbar {
    background: var(--primary);
    color: white;
    padding: 10px 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    z-index: 10;
}

.pdf-controls {
    display: flex;
    align-items: center;
    gap: 15px;
}

.pdf-btn {
    background: rgba(255,255,255,0.1);
    border: none;
    color: white;
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: 0.2s;
}

.pdf-btn:hover { background: rgba(255,255,255,0.2); }
.pdf-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.close-pdf { background: #ef4444; }
.close-pdf:hover { background: #dc2626; }

.pdf-page-info {
    font-weight: 600;
    font-size: 0.95rem;
}

.pdf-container {
    flex: 1;
    overflow: auto;
    display: flex;
    justify-content: center;
    padding: 15px;
    -webkit-overflow-scrolling: touch; 
}

#pdf-render {
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    border-radius: 4px;
    max-width: 100%;
    height: auto;
}

.pdf-top-bar {
    position: absolute; top: 0; left: 0; width: 100%; height: 60px;
    background: rgba(26, 26, 26, 0.95); backdrop-filter: blur(10px);
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 20px; box-shadow: 0 2px 10px rgba(0,0,0,0.5); z-index: 10;
}
.pdf-title { color: #fff; font-weight: 600; font-size: 1.1rem; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; max-width: 50vw; }
.pdf-actions { display: flex; gap: 10px; align-items: center; }
.pdf-tool-btn {
    background: #333; color: white; border: none; width: 36px; height: 36px;
    border-radius: 8px; cursor: pointer; transition: 0.2s;
}
.pdf-tool-btn:hover { background: #444; transform: scale(1.05); }
.pdf-close-btn {
    background: #ef4444; color: white; border: none; padding: 0 15px; height: 36px;
    border-radius: 8px; font-weight: bold; cursor: pointer; transition: 0.2s; display: flex; align-items: center; gap: 5px;
}
.pdf-close-btn:hover { background: #dc2626; }
.pdf-scroll-area {
    position: absolute; top: 60px; left: 0; width: 100%; height: calc(100% - 60px);
    overflow-y: auto; overflow-x: auto; background: #2d2d2d; padding-top: 20px;
}
.pdf-page-wrapper {
    background: #fff; margin-bottom: 20px; box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    position: relative; border-radius: 4px; overflow: hidden;
}
.pdf-page-loading {
    position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
    color: #999; display: flex; flex-direction: column; align-items: center; gap: 10px;
}
.pdf-page-indicator {
    position: absolute; bottom: 20px; left: 50%; transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.8); color: white; padding: 8px 20px;
    border-radius: 30px; font-weight: 600; font-size: 0.9rem; z-index: 10;
    box-shadow: 0 4px 15px rgba(0,0,0,0.5); backdrop-filter: blur(5px);
    pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}

@media (max-width: 768px) {
    body { 
        padding: 1rem;
        padding-bottom: 80px; 
    }
    
    .search-container { 
        flex-direction: column; 
    }
    
    .book-grid { 
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); 
        gap: 1.5rem; 
    }
    
    h1 { 
        font-size: 2.25rem; 
    }
    
    .tagline { 
        font-size: 1rem; 
    }
    
    .search-select { 
        min-width: 100%; 
    }
    
    .modal-content {
        width: 95% !important;
        margin: 5vh auto !important; 
        padding: 1.2rem !important;  
        max-height: 90vh !important;            
        overflow-y: auto !important;
        display: flex;
        flex-direction: column;
    }
    
    .modal-content h3 {
        font-size: 1.3rem;
        margin-bottom: 1rem !important;
        margin-top: 0;
    }

    .form-group {
        margin-bottom: 0.8rem !important;
    }

    .form-group label {
        font-size: 0.9rem;
        margin-bottom: 0.2rem !important;
    }

    .search-input {
        padding: 0.6rem !important;
    }

    .close-modal-btn {
        top: 5px;
        right: 10px;
        width: 30px;
        height: 30px;
        font-size: 1.2rem;
        line-height: 30px; 
    }

    #uploadForm, #editForm {
        flex: 1;
        overflow-y: visible; 
        padding-bottom: 20px;
    }

    .submit-btn {
        position: sticky !important;
        bottom: 0 !important;
        width: 100% !important;
        margin-top: 20px !important;
        z-index: 100;
        box-shadow: 0 -4px 10px rgba(0,0,0,0.1);
    }

    .floating-buttons {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        width: 100%;
        background-color: #ffffff;
        box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.08);
        display: flex;
        flex-direction: row;
        justify-content: space-around;
        align-items: center;
        padding: 8px 0 15px 0;
        gap: 0;
        border-top-left-radius: 20px;
        border-top-right-radius: 20px;
        z-index: 2000;
        animation: slideInUp 0.5s ease-out;
    }

    .floating-btn.extended {
        background: transparent !important;
        border: none !important;
        box-shadow: none !important;
        flex-direction: column;
        gap: 4px;
        padding: 5px;
        color: #64748b !important;
        flex: 1;
        transform: none !important;
        animation: none !important;
        height: auto;
    }

    .floating-btn.extended i {
        font-size: 1.4rem;
    }

    .floating-btn.extended span {
        font-size: 0.75rem;
        font-weight: 600;
    }

    .btn-upload-fab {
        color: var(--primary) !important;
    }

    .secondary-actions {
        flex-direction: column;
    }
}