/* ===== Audiobook Player - Minimalist Immersive Design ===== */

/* CSS Variables for theming */
:root {
    --bg-primary: #F5F1E8;
    --bg-secondary: #FFFFFF;
    --bg-card: #FFFFFF;
    --text-primary: #2C2C2C;
    --text-secondary: #666666;
    --text-muted: #999999;
    --accent: #8B7355;
    --accent-light: #A68B6A;
    --border: #E5E0D5;
    --shadow: rgba(0, 0, 0, 0.08);
    --player-bg: rgba(255, 255, 255, 0.95);
    --progress-bg: #E5E0D5;
    --progress-fill: #8B7355;
}

.dark-mode {
    --bg-primary: #1A1A1A;
    --bg-secondary: #252525;
    --bg-card: #2A2A2A;
    --text-primary: #E8E1D1;
    --text-secondary: #B8B0A0;
    --text-muted: #888888;
    --accent: #A68B6A;
    --accent-light: #C4A882;
    --border: #3A3A3A;
    --shadow: rgba(0, 0, 0, 0.3);
    --player-bg: rgba(40, 40, 40, 0.98);
    --progress-bg: #3A3A3A;
    --progress-fill: #A68B6A;
}

/* Reset and Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: Georgia, "Times New Roman", serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
}

/* App Container */
.app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ===== Header ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 56px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    z-index: 1000;
    box-shadow: 0 1px 3px var(--shadow);
}

.header-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    flex: 1;
    text-align: center;
    margin: 0 10px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Navigation Buttons */
.nav-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    background: none;
    border: none;
    color: var(--accent);
    font-size: 0.9rem;
    cursor: pointer;
    padding: 8px 12px;
    border-radius: 8px;
    transition: background 0.2s;
}

.nav-btn:hover {
    background: var(--bg-primary);
}

.nav-icon {
    font-size: 0.8rem;
}

.back-btn .nav-text {
    display: none;
}

@media (min-width: 400px) {
    .back-btn .nav-text {
        display: inline;
    }
}

/* Theme Toggle */
.theme-toggle {
    background: none;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: transform 0.2s;
}

.theme-toggle:hover {
    transform: scale(1.1);
}

/* ===== Main Content ===== */
.main-content {
    flex: 1;
    padding: 72px 16px 24px;
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
}

/* Welcome Section */
.welcome {
    text-align: center;
    margin-bottom: 32px;
}

.welcome h2 {
    font-size: 1.5rem;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.subtitle {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ===== Source Cards (Home) ===== */
.sources-grid {
    display: grid;
    gap: 16px;
}

.source-card {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--bg-card);
    border-radius: 16px;
    padding: 20px;
    text-decoration: none;
    color: inherit;
    box-shadow: 0 2px 8px var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
    min-height: 80px;
}

.source-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px var(--shadow);
}

.source-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
}

.source-info {
    flex: 1;
}

.source-name {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.source-count {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.source-arrow {
    font-size: 1.5rem;
    color: var(--text-muted);
}

/* ===== List Page ===== */
.list-header {
    margin-bottom: 20px;
}

.list-header h2 {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.search-box input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
}

.search-box input:focus {
    outline: none;
    border-color: var(--accent);
}

.search-box input::placeholder {
    color: var(--text-muted);
}

/* Stories List */
.stories-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.story-item {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-card);
    border-radius: 12px;
    padding: 16px;
    text-decoration: none;
    color: inherit;
    transition: background 0.2s;
}

.story-item:hover {
    background: var(--bg-secondary);
}

.story-number {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    border-radius: 50%;
    font-size: 0.85rem;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.story-info {
    flex: 1;
    min-width: 0;
}

.story-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.story-meta {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.story-meta .author {
    color: var(--accent);
}

.story-arrow {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    border-radius: 50%;
    font-size: 0.7rem;
    color: var(--accent);
    flex-shrink: 0;
}

/* ===== Player Page ===== */
.player-page {
    overflow: hidden;
}

/* Fixed Player Bar (80px) */
.player-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: var(--player-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 0 16px;
}

.player-controls {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
}

.player-info {
    flex: 1;
    min-width: 0;
}

.player-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 2px;
}

.player-author {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.play-btn, .close-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform 0.2s;
}

.play-btn {
    background: var(--accent);
    color: white;
    font-size: 1.2rem;
}

.play-btn:hover {
    transform: scale(1.05);
    background: var(--accent-light);
}

.close-btn {
    background: var(--bg-primary);
    color: var(--text-secondary);
    font-size: 1rem;
}

.close-btn:hover {
    color: var(--text-primary);
}

/* Progress Bar */
.progress-container {
    display: flex;
    align-items: center;
    gap: 10px;
    padding-top: 8px;
}

.time-current, .time-total {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-family: -apple-system, BlinkMacSystemFont, sans-serif;
    min-width: 35px;
}

.time-total {
    text-align: right;
}

/* Speed Control Bar */
.speed-control-bar {
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    height: 44px;
    background: var(--player-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    padding: 0 20px;
}

.speed-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-family: inherit;
    cursor: pointer;
    padding: 6px 16px;
    border-radius: 16px;
    transition: all 0.2s;
    min-width: 60px;
}

.speed-btn:hover {
    color: var(--text-primary);
    background: var(--bg-primary);
}

.speed-btn.active {
    color: white;
    background: var(--accent);
}

/* Content Area with Speed Control */
.content-area.player-with-speed {
    margin-top: 124px; /* 80px player + 44px speed control */
}

.progress-bar {
    flex: 1;
    height: 4px;
    background: var(--progress-bg);
    border-radius: 2px;
    cursor: pointer;
    position: relative;
}

.progress-fill {
    height: 100%;
    background: var(--progress-fill);
    border-radius: 2px;
    width: 0%;
    transition: width 0.1s linear;
}

/* Content Area */
.content-area {
    margin-top: 80px;
    padding: 20px 16px 40px;
    height: calc(100vh - 80px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.content-area.player-with-speed {
    margin-top: 124px; /* 80px player + 44px speed control */
    height: calc(100vh - 124px);
}

.story-content {
    max-width: 680px;
    margin: 0 auto;
}

.content-header {
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border);
}

.content-header h1 {
    font-size: 1.6rem;
    line-height: 1.3;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.content-meta {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.content-meta .author {
    color: var(--accent);
    font-weight: 500;
}

.content-meta .year {
    margin-left: 8px;
    padding-left: 8px;
    border-left: 1px solid var(--border);
}

/* Content Body */
.content-body {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-primary);
}

.content-chunk {
    margin-bottom: 24px;
    transition: opacity 0.3s ease;
}

.content-chunk p {
    margin-bottom: 1.2em;
    text-align: justify;
    hyphens: auto;
}

.content-chunk p:last-child {
    margin-bottom: 0;
}

/* Loading State */
.loading {
    text-align: center;
    padding: 40px;
    color: var(--text-muted);
}

/* Content End */
.content-end {
    text-align: center;
    padding: 48px 0;
    color: var(--text-muted);
    border-top: 1px solid var(--border);
    margin-top: 48px;
}

.content-end p {
    font-style: italic;
    margin-bottom: 24px;
}

.back-to-list {
    padding: 12px 32px;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 24px;
    font-size: 0.95rem;
    cursor: pointer;
    transition: background 0.2s;
}

.back-to-list:hover {
    background: var(--accent-light);
}

/* ===== Empty State ===== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-state p {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.empty-subtitle {
    font-size: 0.85rem !important;
}

/* ===== Footer ===== */
.footer {
    text-align: center;
    padding: 20px;
    color: var(--text-muted);
    font-size: 0.8rem;
    border-top: 1px solid var(--border);
}

/* ===== Responsive Adjustments ===== */
@media (min-width: 768px) {
    .main-content {
        padding-top: 80px;
    }
    
    .content-area {
        padding: 32px 40px;
    }
    
    .content-body {
        font-size: 1.2rem;
        line-height: 1.9;
    }
}

@media (min-width: 1024px) {
    .player-bar {
        left: auto;
        width: 380px;
        right: 0;
        top: 0;
        bottom: 0;
        height: auto;
        border-left: 1px solid var(--border);
        border-bottom: none;
        flex-direction: column-reverse;
        justify-content: flex-end;
        padding: 24px;
    }
    
    .player-controls {
        flex-direction: column;
        gap: 20px;
    }
    
    .player-info {
        text-align: center;
    }
    
    .progress-container {
        padding-top: 0;
        padding-bottom: 20px;
    }
    
    .content-area {
        margin-top: 0;
        margin-right: 380px;
        height: 100vh;
    }
    
    .content-area.player-with-speed {
        margin-top: 0;
        margin-right: 380px;
        height: 100vh;
    }
    
    .speed-control-bar {
        left: auto;
        right: 0;
        top: auto;
        bottom: 0;
        width: 380px;
        height: 60px;
        border-top: 1px solid var(--border);
        border-bottom: none;
        border-left: 1px solid var(--border);
    }
}

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

::-webkit-scrollbar-track {
    background: transparent;
}

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

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

/* ===== Selection ===== */
::selection {
    background: var(--accent-light);
    color: white;
}

.dark-mode ::selection {
    background: var(--accent);
}