/* ============================================================================ */
/* ========================== ROOT VARIABLES ================================ */
/* ============================================================================ */

:root {
    /* Colors */
    --primary-color: #3b82f6;
    --primary-dark: #1d4ed8;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #06b6d4;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --white: #ffffff;
    --black: #000000;
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    /* Border radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.6s ease;
}
 
/* ============================================================================ */
/* ========================== LAYOUT & STRUCTURE ============================ */
/* ============================================================================ */

.container-modern {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.section-spacing {
    margin-bottom: 2rem;
}

.grid-responsive {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* ============================================================================ */
/* ========================== FORM COMPONENTS ================================ */
/* ============================================================================ */

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
    display: block;
}

.validation-message {
    color: var(--danger-color);
    font-size: 0.875rem;
    margin-top: 0.25rem;
    display: block;
}

.modern-alert {
    border: none;
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
}

.modern-input {
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    font-size: 1rem;
    transition: all var(--transition-normal);
    background: rgba(255, 255, 255, 0.8);
    width: 100%;
}

    .modern-input:focus {
        border-color: var(--primary-color);
        box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
        background: var(--white);
        outline: none;
    }

    .modern-input.is-valid {
        border-color: var(--success-color);
        background: rgba(16, 185, 129, 0.05);
    }

    .modern-input.is-invalid {
        border-color: var(--danger-color);
        background: rgba(239, 68, 68, 0.05);
    }

.readonly-input {
    background-color: var(--gray-50) !important;
    border-color: var(--gray-200) !important;
    color: var(--gray-500) !important;
    cursor: not-allowed !important;
}

    .readonly-input:focus {
        background-color: var(--gray-50) !important;
        border-color: var(--gray-200) !important;
        box-shadow: none !important;
    }

/* Search Components */
.search-section {
    max-width: 600px;
    margin: 0 auto;
}

.search-container {
    position: relative;
}

.search-input {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: 1rem;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    transition: all var(--transition-normal);
}

    .search-input:focus {
        outline: none;
        border-color: var(--primary-color);
        box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
        background: var(--white);
    }

.search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-400);
    font-size: 1.1rem;
}

.clear-search {
    position: absolute;
    right: 3rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--gray-500);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1.5rem;
    height: 1.5rem;
}

    .clear-search:hover {
        background: var(--gray-100);
        color: var(--gray-700);
    }

/* Upload Areas */
.upload-area {
    border: 2px dashed var(--gray-200);
    border-radius: var(--radius-md);
    padding: 2rem;
    text-align: center;
    background: rgba(249, 250, 251, 0.5);
    transition: all var(--transition-normal);
    cursor: pointer;
    position: relative;
    display: none;
}

    .upload-area:hover,
    .upload-area.drag-over {
        border-color: var(--primary-color);
        background: rgba(59, 130, 246, 0.05);
    }

.file-input {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

.upload-content i {
    font-size: 3rem;
    color: var(--gray-500);
    margin-bottom: 1rem;
}

.upload-content h5 {
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}

.upload-content p {
    color: var(--gray-500);
    margin-bottom: 0.5rem;
}

.upload-link {
    color: var(--primary-color);
    text-decoration: underline;
    cursor: pointer;
}

/* ============================================================================ */
/* ========================== BUTTON COMPONENTS ============================== */
/* ============================================================================ */

.btn-modern,
.btn-add-new,
.primary-action {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    justify-content: space-between;
}

.btn-add-new {
    background: linear-gradient(135deg, var(--success-color) 0%, #059669 100%);
    box-shadow: var(--shadow-md);
}

    .btn-modern:hover,
    .btn-add-new:hover,
    .primary-action:hover {
        transform: translateY(-2px);
        color: var(--white);
        text-decoration: none;
    }

.btn-modern:hover {
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.btn-add-new:hover {
    box-shadow: 0 8px 25px rgba(16, 185, 129, 0.4);
}

.primary-action:hover {
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

    .primary-action:hover i,
    .btn-modern:hover i {
        transform: translateX(4px);
    }

.save-btn {
    background: linear-gradient(135deg, var(--success-color) 0%, #059669 100%);
    border: none;
    transition: all var(--transition-normal);
}

    .save-btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 25px rgba(16, 185, 129, 0.4);
    }

.delete-btn {
    transition: all var(--transition-normal);
}

    .delete-btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 25px rgba(239, 68, 68, 0.3);
    }

/* Filter Buttons */
.filter-group {
    display: flex;
    background: rgba(255, 255, 255, 0.9);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.filter-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: transparent;
    border: none;
    color: var(--gray-600);
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition-normal);
    cursor: pointer;
}

    .filter-btn:hover {
        background: rgba(59, 130, 246, 0.1);
        color: var(--primary-color);
        text-decoration: none;
    }

    .filter-btn.active {
        background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
        color: var(--white);
    }

        .filter-btn.active:hover {
            color: var(--white);
        }

/* Action Buttons */
.action-btn {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
}

.edit-btn {
    background: var(--primary-color);
}

.view-btn {
    background: var(--gray-600);
}

.add-btn {
    background: var(--success-color);
}

.delete-btn.action-btn {
    background: var(--danger-color);
}

.action-btn:hover {
    transform: scale(1.1);
    color: var(--white);
    text-decoration: none;
}

/* ============================================================================ */
/* ========================== CARD COMPONENTS ================================ */
/* ============================================================================ */

/* Universal Card Grid */
.books-grid,
.authors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

/* Universal Card Base */
.book-card,
.author-card {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

    .book-card.loaded,
    .author-card.loaded {
        opacity: 1;
        transform: translateY(0);
    }

.book-card-inner,
.author-card-inner {
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    height: 100%;
    display: flex;
    flex-direction: column;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.book-card:hover .book-card-inner,
.author-card:hover .author-card-inner {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

/* Cover/Avatar Sections */
.book-cover,
.author-avatar {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.author-avatar {
    height: 180px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.cover-image,
.book-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.book-card:hover .cover-image,
.book-card:hover .book-image {
    transform: scale(1.1);
}

.avatar-circle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: white;
}

/* Status Badges */
.status-badge {
    /*position: absolute;*/
    top: 1rem;
    right: 1rem;
    padding: 0.2rem 0.5rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    width: fit-content;
    gap: 0.25rem;
}

    .status-badge.available,
    .status-badge.has-books {
        background: rgba(34, 197, 94, 0.9);
        color: var(--white);
    }

    .status-badge.unavailable,
    .status-badge.no-books {
        background: rgba(210, 55, 31, 0.9);
        color: var(--white);
    }

/* Quick Actions Overlay */
.quick-actions {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.book-card:hover .quick-actions,
.author-card:hover .quick-actions {
    opacity: 1;
}

/* Card Content */
.book-info,
.author-info {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.book-title,
.author-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 0.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.book-author {
    font-size: 0.9rem;
    color: var(--gray-600);
    margin-bottom: 0.5rem;
    font-style: italic;
    font-weight: 500;
}

.book-isbn {
    font-size: 0.8rem;
    color: var(--gray-500);
    margin-bottom: 1rem;
    font-family: monospace;
}

/* Stats */
.book-stats,
.author-stats {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.8rem;
    color: var(--gray-600);
}

    .stat-item i {
        color: var(--primary-color);
    }

/* Books Preview (for authors) */
.books-preview {
    margin-bottom: 1rem;
}

.book-titles {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    margin-top: 0.25rem;
}

.book-title-pill {
    background: var(--gray-100);
    color: var(--gray-700);
    font-size: 0.7rem;
    padding: 0.15rem 0.4rem;
    border-radius: 8px;
    max-width: 80px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.more-books {
    font-size: 0.7rem;
    color: var(--gray-500);
    font-style: italic;
}

/* ============================================================================ */
/* ========================== SPECIALIZED COMPONENTS ======================== */
/* ============================================================================ */

/* Author Input Groups */
.author-input-group {
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-md);
    overflow: hidden;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(249, 250, 251, 0.95) 100%);
}

    .author-input-group .input-group-text {
        background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
        border: none;
        color: var(--gray-500);
    }

    .author-input-group .form-select {
        border: none;
        background: transparent;
        flex: 1;
    }

    .author-input-group .add-author-btn {
        background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
        border: none;
        font-weight: 600;
        padding: 0.5rem 1rem;
        display: flex;
        align-items: center;
        gap: 0.5rem;
        color: var(--white);
    }

        .author-input-group .add-author-btn:hover {
            background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
            transform: translateY(-1px);
        }

/* Statistics Cards */
.stat-card {
    background: rgba(255, 255, 255, 0.9);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    text-align: center;
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: transform 0.2s ease;
    backdrop-filter: blur(10px);
}

    .stat-card:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    }

.stat-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.stat-info h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    transition: all var(--transition-normal);
}

.stat-info p {
    color: var(--gray-500);
    margin-bottom: 0;
    font-size: 0.9rem;
}

/* Page Headers */
.edit-header,
.books-header,
.authors-header {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(147, 51, 234, 0.1) 100%);
    border-radius: var(--radius-lg);
    padding: 2rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.header-content h1 {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-actions {
    display: flex;
    gap: 12px;
}

/* Cover Upload */
.cover-upload-section {
    position: sticky;
    top: 2rem;
}

.cover-preview-container {
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: var(--shadow-lg);
}

.current-cover {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 1rem;
    aspect-ratio: 3/4;
}

.cover-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--white);
    opacity: 0;
    transition: opacity var(--transition-normal);
    cursor: pointer;
}

.current-cover:hover .cover-overlay {
    opacity: 1;
}

.current-cover:hover .cover-image {
    transform: scale(1.05);
}

.cover-overlay i {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

/* Form Components */
.form-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--radius-xl);
    padding: 2rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: var(--shadow-lg);
}

.form-section {
    margin-bottom: 2rem;
}

.section-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--gray-200);
}

.form-actions {
    background: rgba(249, 250, 251, 0.8);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    border: 1px solid rgba(229, 231, 235, 0.5);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
}

.empty-content {
    max-width: 400px;
    margin: 0 auto;
}

    .empty-content i {
        font-size: 4rem;
        color: var(--gray-400);
        margin-bottom: 1rem;
    }

    .empty-content h3 {
        color: var(--gray-700);
        margin-bottom: 0.5rem;
    }

    .empty-content p {
        color: var(--gray-500);
        margin-bottom: 2rem;
    }

/* Results Info */
.results-info {
    font-size: 0.9rem;
    color: var(--gray-500);
}

.search-match {
    animation: highlightMatch var(--transition-normal) ease;
}

/* ============================================================================ */
/* ========================== HOME PAGE COMPONENTS ================================ */
/* ============================================================================ */
.home-book-card {
    height: 420px;
    perspective: 1000px;
}


    .home-book-card:hover .home-gradient-overlay {
        opacity: 1;
    }

    .home-book-card:hover .home-book-overlay {
        transform: translateY(0);
    }


.home-image-container {
    height: 240px;
    position: relative;
    overflow: hidden;
}

.home-gradient-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(45deg, rgba(59, 130, 246, 0.1) 0%, rgba(147, 51, 234, 0.1) 100%);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.home-book-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.7) 0%, transparent 100%);
    transform: translateY(100%);
    transition: transform var(--transition-normal);
}

.home-book-meta {
    display: flex;
    justify-content: space-between;
    align-items: end;
}

.home-copies-count {
    font-weight: bold;
    text-align: center;
    color: var(--white);
}

.home-count-number {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1;
}

.home-count-label {
    font-size: 0.75rem;
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.home-book-content {
    padding: .5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.home-card-info {
    padding: 10px;
    height: 140px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.home-book-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 0.5rem;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.home-book-author {
    font-size: 0.9rem;
    color: var(--gray-600);
    margin-bottom: 0.5rem;
    font-style: italic;
    font-weight: 500;
}

.home-book-description {
    font-size: 0.8rem;
    color: var(--gray-400);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 0;
}

/* ============================================================================ */
/* ========================== DELETE PAGE COMPONENTS ======================== */
/* ============================================================================ */

.copy-card {
    cursor: pointer;
    transition: transform .2s, box-shadow .2s;
    border-radius: .85rem;
    overflow: hidden;
    position: relative;
}

    .copy-card:hover {
        transform: translateY(-6px);
        box-shadow: 0 10px 25px rgba(0,0,0,.15);
    }

    .copy-card.selected {
        box-shadow: 0 0 0 3px var(--primary-dark);
    }

    .copy-card.disabled {
        filter: grayscale(.75);
        pointer-events: none;
    }

.copy-overlay {
    position: absolute;
    inset: 0;
    background: rgba(220,53,69,.25);
    opacity: 0;
    transition: opacity .2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.copy-card.selected .copy-overlay {
    opacity: 1;
}

.copy-image {
    width: 100%;
    aspect-ratio: 3/4;
    object-fit: cover;
}

.bulk-toolbar {
    backdrop-filter: blur(10px);
    box-shadow: 0 -4px 12px rgba(0,0,0,.08);
    border-top-left-radius: 1rem;
    border-top-right-radius: 1rem;
}

.delete-selected-copies-button {
    background: linear-gradient(135deg,#ef4444 0%,#b91c1c 100%);
    color: #fff;
    border: none;
}

    .delete-selected-copies-button:disabled {
        pointer-events: none;
        opacity: 0.6;
        transition: none;
    }

    .delete-selected-copies-button:hover {
        transform: translateY(-2px);
        box-shadow: 0 6px 14px rgba(185,28,28,.35);
        transition: transform .15s ease, box-shadow .15s;
    }

/* ============================================================================ */
/* ========================== ANIMATIONS ===================================== */
/* ============================================================================ */

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes countUp {
    0% {
        transform: scale(1);
        color: inherit;
    }

    50% {
        transform: scale(1.15);
        color: var(--success-color);
        font-weight: bold;
    }

    100% {
        transform: scale(1);
        color: var(--success-color);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }

    50% {
        opacity: 0.7;
        color: var(--success-color);
    }
}

@keyframes highlightMatch {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.02);
    }

    100% {
        transform: scale(1);
    }
}

/* ============================================================================ */
/* ========================== SWEETALERT2 CUSTOMIZATION ==================== */
/* ============================================================================ */

#swal2-html-container {
    color: #545454 !important;
    text-align: start !important;
}

.swal2-popup {
    border-radius: var(--radius-lg) !important;
}

.swal2-actions {
    display: flex !important;
    justify-content: space-between !important;
    width: 100% !important;
    padding: 0 !important;
    margin: 20px 0 auto !important;
    position: relative !important;
}

    /* Position buttons at edges regardless of order */
    .swal2-actions .swal2-cancel,
    .swal2-actions .swal2-confirm {
        margin: 0 28px !important;
        flex: 0 0 auto !important;
    }

/* Hide unused elements */
.swal2-deny:not([style*="display: inline-block"]),
.swal2-loader {
    display: none !important;
}

/* Ensure deny button doesn't interfere when hidden */
.swal2-deny[style*="display: none"] {
    display: none !important;
    flex: 0 !important;
    margin: 0 !important;
    padding: 0 !important;
    border: none !important;
    width: 0 !important;
    height: 0 !important;
}

.swal2-input-label {
    justify-content: start !important;
    margin: 1em 31px auto !important;
} 

/* ============================================================================ */
/* ========================== RESPONSIVE DESIGN ============================== */
/* ============================================================================ */
@media (max-width: 1200px) {
    .container-modern {
        padding: 0 1.5rem;
    }
}

@media (max-width: 992px) {
    .cover-upload-section {
        position: static;
        margin-bottom: 2rem;
    }

    .header-actions {
        flex-direction: column;
        width: 100%;
    }

    .edit-header .d-flex {
        flex-direction: column;
        gap: 1rem;
    }
}

@media (max-width: 768px) {
    .books-grid,
    .authors-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .form-card,
    .cover-preview-container {
        padding: 1rem;
    }

    .edit-header,
    .books-header,
    .authors-header {
        padding: 1rem;
    }

    .header-actions {
        width: 100%;
        justify-content: center;
    }

    .filter-group {
        width: 100%;
    }

    .filter-btn {
        flex: 1;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container-modern {
        padding: 0 1rem;
    }
}

/* ============================================================================ */
/* ========================== DARK MODE ====================================== */
/* ============================================================================ */

@media (prefers-color-scheme: dark) {
    :root {
        --gray-50: #111827;
        --gray-100: #1f2937;
        --gray-200: #374151;
        --gray-300: #4b5563;
        --gray-400: #6b7280;
        --gray-500: #9ca3af;
        --gray-600: #d1d5db;
        --gray-700: #e5e7eb;
        --gray-800: #f3f4f6;
        --gray-900: #f9fafb;
        --white: #111827;
        --black: #f9fafb;
    }

    .book-card-inner,
    .author-card-inner,
    .edit-header,
    .books-header,
    .authors-header,
    .cover-preview-container,
    .form-card {
        background: rgba(30, 30, 30, 0.95);
        border: 1px solid rgba(255, 255, 255, 0.1);
    }

    .book-title,
    .author-name,
    .section-title,
    .form-label {
        color: var(--gray-100);
    }

    .book-author,
    .book-isbn {
        color: var(--gray-400);
    }

    .modern-input {
        background: rgba(55, 65, 81, 0.8);
        border-color: var(--gray-600);
        color: var(--gray-900);
    }

        .modern-input:focus {
            background: rgba(55, 65, 81, 1);
        }

    .readonly-input {
        background-color: #2d3748 !important;
        border-color: #4a5568 !important;
        color: #a0aec0 !important;
    }

        .readonly-input:focus {
            background-color: #2d3748 !important;
            border-color: #4a5568 !important;
        }

    .author-input-group {
        background: linear-gradient(135deg, rgba(30, 30, 30, 0.95) 0%, rgba(55, 65, 81, 0.95) 100%);
    }

        .author-input-group .input-group-text {
            background: linear-gradient(135deg, #374151 0%, #4b5563 100%);
            color: var(--gray-600);
        }

    .stat-card {
        background: rgba(30, 30, 30, 0.9);
        border: 1px solid rgba(255, 255, 255, 0.1);
    }

    .search-input {
        background: rgba(55, 65, 81, 0.9);
        border-color: var(--gray-600);
        color: var(--gray-100);
    }

    .filter-group {
        background: rgba(55, 65, 81, 0.9);
    }

    .book-title-pill {
        background: var(--gray-700);
        color: var(--gray-300);
    }

    .swal2-popup {
        background: #2d3748 !important;
        color: #e2e8f0 !important;
    }

    .swal2-title {
        color: #e2e8f0 !important;
    }

    .bulk-toolbar {
        background: rgba(30,30,30,.85);
    }
}