/* ===================================
   Minimal Library Design with Original Cards
   =================================== */

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

:root {
    /* Original Green Color Palette for Cards */
    --primary-green: #2e7d32;
    --primary-green-light: #4caf50;
    --primary-green-lighter: #66bb6a;
    --primary-green-dark: #1b5e20;
    --accent-green: #81c784;
    --bg-green-light: #e8f5e9;
    --bg-green-lighter: #f1f8e9;
    
    /* Minimal Grayscale Palette */
    --text-dark: #1a1a1a;
    --text-medium: #4a4a4a;
    --text-light: #6a6a6a;
    --white: #ffffff;
    --off-white: #fafafa;
    --border-light: #e0e0e0;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Border Radius */
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 16px;
}

/* ===================================
   Base Styles
   =================================== */

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    text-decoration: none;
    color: inherit;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, select {
    font-family: inherit;
    font-size: inherit;
}

/* ===================================
   Main Layout
   =================================== */

.library-main {
    min-height: calc(100vh - 200px);
    padding-top: 40px;
}

.library-container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===================================
   Search Section
   =================================== */

.search-section {
    margin-bottom: 48px;
    max-width: 800px;
}

.search-wrapper {
    position: relative;
    margin-bottom: 16px;
}

.search-input {
    width: 100%;
    padding: 14px 48px;
    border: 1px solid var(--border-light);
    border-radius: 8px;
    font-size: 15px;
    background: var(--white);
    transition: all var(--transition-fast);
    outline: none;
}

.search-input:focus {
    border-color: #999;
    box-shadow: 0 0 0 3px rgba(0,0,0,0.03);
}

.search-input::placeholder {
    color: #999;
}

.search-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: #999;
    pointer-events: none;
}

.clear-search {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #999;
    transition: all var(--transition-fast);
    border-radius: 4px;
}

.clear-search:hover {
    color: var(--text-dark);
    background: var(--off-white);
}

/* Format Pills */
.format-pills {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding: 2px;
    margin-left: -2px;
    margin-right: -2px;
}

.format-pills::-webkit-scrollbar {
    display: none;
}

.format-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: 999px;
    border: 1px solid var(--border-light);
    background: var(--white);
    color: var(--text-medium);
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast),
                border-color var(--transition-fast), box-shadow var(--transition-fast),
                transform var(--transition-fast);
}

.format-pill i {
    font-size: 13px;
    color: var(--text-light);
    transition: color var(--transition-fast);
}

.format-pill:hover {
    background: var(--bg-green-lighter);
    border-color: var(--primary-green-lighter);
    color: var(--text-dark);
}

.format-pill:hover i {
    color: var(--primary-green);
}

.format-pill:focus-visible {
    outline: 2px solid var(--primary-green-lighter);
    outline-offset: 2px;
}

.format-pill.active {
    background: var(--primary-green);
    border-color: var(--primary-green);
    color: var(--white);
    box-shadow: 0 4px 14px rgba(46, 125, 50, 0.22);
}

.format-pill.active i {
    color: var(--white);
}

.format-pill.active:hover {
    background: var(--primary-green-dark);
    border-color: var(--primary-green-dark);
    color: var(--white);
}

.format-pill.active:hover i {
    color: var(--white);
}

/* Filter Row */
.filter-row {
    display: flex;
    gap: 12px;
    align-items: center;
    margin-bottom: 20px;
}

.filter-select {
    padding: 8px 12px;
    border: 1px solid var(--border-light);
    border-radius: 6px;
    font-size: 14px;
    color: var(--text-dark);
    background: var(--white);
    outline: none;
    transition: all var(--transition-fast);
    cursor: pointer;
    min-width: 120px;
}

.filter-select:hover {
    border-color: #999;
}

.filter-select:focus {
    border-color: #666;
}

.reset-button {
    padding: 8px 16px;
    font-size: 14px;
    color: var(--text-medium);
    transition: all var(--transition-fast);
    border-radius: 6px;
}

.reset-button:hover {
    color: var(--text-dark);
    background: var(--off-white);
}

/* Results Info */
.results-info {
    display: flex;
    align-items: center;
}

.results-count {
    font-size: 13px;
    color: var(--text-light);
    font-weight: 500;
}

/* ===================================
   Content Section
   =================================== */

.content-section {
    min-height: 400px;
}

/* State Containers */
.state-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 80px 20px;
    text-align: center;
}

/* Loading State */
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-light);
    border-top-color: var(--primary-green);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Empty & Error States */
.empty-icon,
.error-icon {
    width: 80px;
    height: 80px;
    background: var(--bg-green-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.empty-icon i,
.error-icon i {
    font-size: 36px;
    color: var(--primary-green);
}

.error-icon {
    background: #ffebee;
}

.error-icon i {
    color: #ef5350;
}

.empty-title,
.error-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.empty-text,
.error-text {
    font-size: 15px;
    color: var(--text-medium);
    margin-bottom: 24px;
}

.retry-button {
    padding: 10px 24px;
    background: var(--primary-green);
    color: var(--white);
    border-radius: var(--border-radius-sm);
    font-size: 14px;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.retry-button:hover {
    background: var(--primary-green-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* ===================================
   Stories Grid - Original Design
   =================================== */

.stories-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

/* Library Story Card - Original Design */
.library-story-card {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border: 2px solid transparent;
}

.library-story-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-green-light);
}

.library-card-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.library-card-cover {
    position: relative;
    width: 100%;
    height: 260px;
    overflow: hidden;
    background: var(--bg-green-light);
}

.library-card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.library-story-card:hover .library-card-cover img {
    transform: scale(1.08);
}

/* Format chips on card cover */
.library-card-formats {
    position: absolute;
    top: 10px;
    right: 10px;
    display: flex;
    gap: 6px;
    z-index: 2;
    pointer-events: none;
}

.format-chip {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.96);
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
    color: var(--primary-green-dark);
    font-size: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.14);
    transition: transform var(--transition-fast);
}

.library-story-card:hover .format-chip {
    transform: translateY(-2px);
}

.format-chip--video {
    color: #c62828;
}

.format-chip--audio {
    color: var(--primary-green-dark);
}

.library-card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(46, 125, 50, 0.92);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.library-story-card:hover .library-card-overlay {
    opacity: 1;
}

.library-read-btn {
    background: var(--white);
    color: var(--primary-green);
    padding: 12px 24px;
    border-radius: var(--border-radius-md);
    font-weight: 600;
    font-size: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
    transform: translateY(10px);
    transition: transform var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.library-story-card:hover .library-read-btn {
    transform: translateY(0);
}

.library-card-content {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.library-card-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.3;
    height: 42px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    margin: 0;
}

.library-card-meta {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.meta-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    background: var(--bg-green-light);
    border-radius: 12px;
    font-size: 12px;
    color: var(--text-dark);
    font-weight: 500;
}

.meta-badge i {
    font-size: 11px;
    color: var(--primary-green);
}

.grade-badge {
    background: var(--bg-green-light);
}

.pages-badge {
    background: var(--off-white);
}

.library-card-footer {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding-top: 8px;
    border-top: 1px solid var(--border-light);
}

.library-card-author,
.library-card-date {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--text-light);
}

.library-card-author i,
.library-card-date i {
    font-size: 11px;
    color: var(--text-medium);
}

/* ===================================
   Pagination - Minimal Design
   =================================== */

.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 48px;
}

.page-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    color: var(--text-medium);
    transition: all var(--transition-fast);
}

.page-btn:hover:not(:disabled) {
    background: var(--off-white);
    color: var(--text-dark);
}

.page-btn:disabled {
    color: var(--border-light);
    cursor: not-allowed;
}

.page-numbers {
    display: flex;
    align-items: center;
    gap: 4px;
}

.page-number {
    min-width: 36px;
    height: 36px;
    padding: 0 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-medium);
    transition: all var(--transition-fast);
    background: transparent;
    border: none;
    cursor: pointer;
}

.page-number:hover {
    background: var(--off-white);
    color: var(--text-dark);
}

.page-number.active {
    background: var(--primary-green);
    color: var(--white);
}

.page-ellipsis {
    padding: 0 6px;
    color: var(--text-light);
    font-size: 14px;
}

/* ===================================
   Responsive Design
   =================================== */

/* Large Desktop (1280px) */
@media (max-width: 1280px) {
    .stories-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Desktop (1024px) */
@media (max-width: 1024px) {
    .stories-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Tablet (768px) */
@media (max-width: 768px) {
    .library-container {
        padding: 0 20px;
    }
    
    .stories-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .library-card-cover {
        height: 240px;
    }
    
    .filter-row {
        flex-wrap: wrap;
    }
    
    .filter-select {
        flex: 1;
        min-width: 100px;
    }
}

/* Mobile (480px) */
@media (max-width: 480px) {
    .library-container {
        padding: 0 16px;
    }

    .search-input {
        padding: 12px 40px;
        font-size: 16px; /* Prevent zoom on iOS */
    }

    .stories-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .library-card-cover {
        height: 280px;
    }

    .filter-row {
        gap: 8px;
    }

    .filter-select,
    .reset-button {
        font-size: 13px;
        padding: 8px 10px;
    }

    .format-pill {
        padding: 9px 14px;
        font-size: 13px;
    }

    .format-chip {
        width: 28px;
        height: 28px;
        font-size: 11px;
    }

    .pagination {
        gap: 4px;
    }

    .page-btn,
    .page-number {
        width: 32px;
        height: 32px;
        min-width: 32px;
        font-size: 13px;
    }
}

/* Small Mobile (360px) */
@media (max-width: 360px) {
    .library-card-cover {
        height: 260px;
    }
    
    .page-btn,
    .page-number {
        width: 30px;
        height: 30px;
        min-width: 30px;
    }
}