/* Reset dan Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

:root {
    --primary-color: #4361ee;
    --primary-light: #4895ef;
    --secondary-color: #3a0ca3;
    --accent-color: #f72585;
    --background-color: #f8f9fa;
    --surface-color: #ffffff;
    --text-color: #212529;
    --text-secondary: #6c757d;
    --border-color: #dee2e6;
    --success-color: #4cc9f0;
    --warning-color: #f8961e;
    --error-color: #f94144;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --header-height: 60px;
    --bottom-nav-height: 60px;
}

[data-theme="dark"] {
    --primary-color: #4361ee;
    --primary-light: #4895ef;
    --secondary-color: #7209b7;
    --background-color: #121212;
    --surface-color: #1e1e1e;
    --text-color: #e9ecef;
    --text-secondary: #adb5bd;
    --border-color: #343a40;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.5);
}

html {
    font-size: 16px;
    height: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
    height: 100%;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
    max-width: 100%;
    height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 0;
}

.chapter-container {
    height: 100vh;
    padding: 0;
    overflow: hidden;
}

/* Header */
.header-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    height: var(--header-height);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.header-title {
    flex: 1;
    text-align: center;
    padding: 0 var(--spacing-md);
}

.header-title h1 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.header-title .subtitle {
    font-size: 0.8rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Icon Button */
.icon-button {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: none;
    color: var(--text-color);
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background-color 0.2s;
}

.icon-button:hover,
.icon-button:active {
    background-color: var(--border-color);
}

.icon-button.active {
    background-color: var(--primary-color);
    color: white;
}

/* Back Button */
.back-button {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--surface-color);
    color: var(--text-color);
    text-decoration: none;
    font-size: 1.2rem;
    transition: background-color 0.2s;
}

.back-button:hover,
.back-button:active {
    background-color: var(--border-color);
}

/* Main Content */
main {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
}

.section-header {
    margin-bottom: var(--spacing-lg);
}

.section-header h2 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* Search Bar */
.search-container {
    margin-bottom: var(--spacing-md);
}

.search-bar {
    position: relative;
    background-color: var(--surface-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.search-bar i {
    color: var(--text-secondary);
    font-size: 1rem;
}

.search-bar input {
    flex: 1;
    border: none;
    background: none;
    color: var(--text-color);
    font-size: 1rem;
    outline: none;
}

.search-bar input::placeholder {
    color: var(--text-secondary);
}

/* Lists */
.novels-list,
.series-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.novel-item,
.series-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-md);
    background-color: var(--surface-color);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--text-color);
    border: 1px solid var(--border-color);
    transition: transform 0.2s, box-shadow 0.2s;
    cursor: pointer;
}

.novel-item:hover,
.novel-item:active,
.series-item:hover,
.series-item:active {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.novel-icon,
.series-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background-color: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    margin-right: var(--spacing-md);
}

.novel-info,
.series-info {
    flex: 1;
    min-width: 0;
}

.novel-info h3,
.series-info h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.novel-info p,
.series-info p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 2px;
}

.series-info small {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.novel-arrow,
.series-arrow {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Empty State */
.empty-state,
.loading,
.error-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    text-align: center;
    color: var(--text-secondary);
}

.empty-state i,
.loading i,
.error-state i {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

.loading i {
    animation: spin 1s linear infinite;
}

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

.empty-state p,
.error-state p {
    margin-bottom: var(--spacing-sm);
}

.empty-state .small {
    font-size: 0.9rem;
}

/* Last Read Section */
.last-read-section {
    background-color: var(--surface-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin: var(--spacing-md);
    border: 1px solid var(--border-color);
}

.last-read-section h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
}

.last-read-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-sm);
    background-color: var(--background-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background-color 0.2s;
}

.last-read-item:hover,
.last-read-item:active {
    background-color: var(--border-color);
}

.last-read-info {
    flex: 1;
}

.last-read-info h4 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 2px;
    color: var(--primary-color);
}

.last-read-info p {
    font-size: 0.85rem;
    color: var(--text-color);
    margin-bottom: 2px;
}

.last-read-info small {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.last-read-action {
    color: var(--text-secondary);
}

/* Chapter Page */
.chapter-header {
    background-color: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: transform 0.3s;
}

.chapter-nav-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    height: var(--header-height);
}

.chapter-title {
    flex: 1;
    text-align: center;
    padding: 0 var(--spacing-md);
}

.chapter-title h1 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chapter-title .subtitle {
    font-size: 0.8rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chapter-controls {
    background-color: var(--surface-color);
    padding: var(--spacing-md);
    border-top: 1px solid var(--border-color);
    display: none;
}

.chapter-controls.visible {
    display: block;
}

.chapter-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.nav-button {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-lg);
    font-size: 0.9rem;
    font-weight: 500;
    flex: 1;
    justify-content: center;
    transition: opacity 0.2s;
}

.nav-button:hover,
.nav-button:active {
    opacity: 0.9;
}

.prev-button {
    justify-content: flex-start;
}

.next-button {
    justify-content: flex-end;
}

.chapter-selector {
    flex: 2;
}

.chapter-selector select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    background-color: var(--surface-color);
    color: var(--text-color);
    font-size: 0.9rem;
    outline: none;
}

.reading-controls {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.control-group {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.control-group span {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.control-buttons {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.control-button {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background-color: var(--surface-color);
    color: var(--text-color);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background-color 0.2s;
}

.control-button:hover,
.control-button:active {
    background-color: var(--border-color);
}

.control-value {
    min-width: 50px;
    text-align: center;
    font-size: 0.9rem;
    font-weight: 500;
}

/* Chapter Content */
.chapter-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
    -webkit-overflow-scrolling: touch;
}

.chapter-text {
    font-size: 16px;
    line-height: 1.5;
    color: var(--text-color);
    max-width: 800px;
    margin: 0 auto;
    padding-bottom: 100px;
}

.chapter-text p {
    margin-bottom: 1.5em;
    text-align: justify;
}

/* Bottom Navigation */
.bottom-navigation {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--bottom-nav-height);
    background-color: var(--surface-color);
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-around;
    padding: var(--spacing-sm);
    z-index: 100;
    transition: transform 0.3s;
}

.nav-bottom-button {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: var(--text-color);
    text-decoration: none;
    font-size: 0.8rem;
    flex: 1;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: background-color 0.2s;
    cursor: pointer;
}

.nav-bottom-button:hover,
.nav-bottom-button:active {
    background-color: var(--border-color);
}

.nav-bottom-button i {
    font-size: 1.2rem;
    margin-bottom: 4px;
}

.nav-bottom-button span {
    font-size: 0.75rem;
}

/* Footer */
footer {
    text-align: center;
    padding: var(--spacing-md);
    color: var(--text-secondary);
    font-size: 0.85rem;
    border-top: 1px solid var(--border-color);
    background-color: var(--surface-color);
}

/* Responsive */
@media (max-width: 480px) {
    html {
        font-size: 14px;
    }
    
    .chapter-nav {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .nav-button {
        width: 100%;
        justify-content: center;
    }
    
    .chapter-selector {
        width: 100%;
    }
}

@media (min-width: 768px) {
    .container {
        max-width: 768px;
        margin: 0 auto;
    }
    
    .chapter-text {
        font-size: 18px;
        line-height: 1.6;
    }
}

/* Utility Classes */
.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--background-color);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}