/* Muse - Web Audio Streaming System Styles */

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

/* CSS Variables - Dark Theme */
:root {
    /* Colors */
    --color-bg: #121212;
    --color-bg-secondary: #1e1e1e;
    --color-bg-tertiary: #282828;
    --color-bg-hover: #2a2a2a;
    --color-bg-active: #333333;

    --color-text: #ffffff;
    --color-text-secondary: #b3b3b3;
    --color-text-muted: #888888;

    --color-primary: #1db954;
    --color-primary-hover: #1ed760;
    --color-primary-active: #1aa34a;

    --color-border: #282828;
    --color-border-hover: #404040;

    --color-error: #e22134;
    --color-success: #1db954;
    --color-warning: #ffa500;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 24px;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;

    /* Layout */
    --header-height: 64px;
    --player-height: 90px;
    --library-width: 280px;

    /* Other */
    --border-radius: 4px;
    --border-radius-lg: 8px;
    --transition: all 0.2s ease;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* Base Styles */
html {
    font-size: var(--font-size-base);
    font-family: var(--font-family);
}

body {
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    overflow: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
}

h1 { font-size: var(--font-size-xl); }
h2 { font-size: var(--font-size-lg); }
h3 { font-size: var(--font-size-base); }

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

.text-muted {
    color: var(--color-text-muted);
}

.text-small {
    font-size: var(--font-size-sm);
}

.text-xs {
    font-size: var(--font-size-xs);
}

/* Header */
.header {
    background-color: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    height: var(--header-height);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    padding: 0 var(--spacing-lg);
}

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

.header-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary);
    margin: 0;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-text);
    padding: var(--spacing-sm);
    cursor: pointer;
    border-radius: var(--border-radius);
}

.menu-toggle:hover {
    background-color: var(--color-bg-hover);
}

.btn-logout {
    background-color: transparent;
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: var(--font-size-sm);
    transition: var(--transition);
}

.btn-logout:hover {
    background-color: var(--color-bg-hover);
    color: var(--color-text);
    border-color: var(--color-border-hover);
}

/* Main Layout */
.main-layout {
    display: flex;
    height: calc(100vh - var(--header-height) - var(--player-height));
    margin-top: var(--header-height);
}

/* Library Panel */
.library-panel {
    width: var(--library-width);
    background-color: var(--color-bg);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.library-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.library-header h2 {
    margin: 0 0 var(--spacing-md) 0;
    font-size: var(--font-size-lg);
}

/* Library Search */
.library-search {
    position: relative;
    display: flex;
    align-items: center;
}

.search-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    padding-right: 36px;
    background-color: var(--color-bg-tertiary);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    outline: none;
    transition: var(--transition);
}

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

.search-input:focus {
    border-color: var(--color-primary);
    background-color: var(--color-bg-hover);
}

.clear-search-btn {
    position: absolute;
    right: var(--spacing-sm);
    background: none;
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.clear-search-btn:hover {
    color: var(--color-text);
    background-color: var(--color-bg-hover);
}

.no-results-message {
    padding: var(--spacing-lg);
    text-align: center;
    color: var(--color-text-secondary);
}

.library-content {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: var(--spacing-md);
}

/* Custom Scrollbar */
.library-content::-webkit-scrollbar {
    width: 12px;
}

.library-content::-webkit-scrollbar-track {
    background: var(--color-bg);
}

.library-content::-webkit-scrollbar-thumb {
    background: var(--color-bg-tertiary);
    border-radius: 6px;
}

.library-content::-webkit-scrollbar-thumb:hover {
    background: var(--color-bg-hover);
}

/* Artist Items */
.artist-item {
    margin-bottom: var(--spacing-sm);
}

.artist-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-bg-secondary);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

.artist-header:hover {
    background-color: var(--color-bg-hover);
}

.expand-icon {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    width: 16px;
}

.artist-name {
    flex: 1;
    font-weight: 600;
    font-size: var(--font-size-base);
}

.item-count {
    font-size: var(--font-size-xs);
}

.artist-content {
    margin-top: var(--spacing-sm);
    margin-left: var(--spacing-lg);
}

/* Album Items */
.album-item, .show-item {
    padding: var(--spacing-sm) var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    background-color: transparent;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

.album-item:hover, .show-item:hover {
    background-color: var(--color-bg-hover);
}

.album-title, .show-date {
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: 2px;
}

.album-meta, .show-meta {
    font-size: var(--font-size-xs);
}

.shows-header {
    padding: var(--spacing-sm) var(--spacing-md);
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    font-weight: 600;
}

/* Content Area */
.content-area {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-xl);
    background-color: var(--color-bg);
}

.content-area::-webkit-scrollbar {
    width: 12px;
}

.content-area::-webkit-scrollbar-track {
    background: var(--color-bg);
}

.content-area::-webkit-scrollbar-thumb {
    background: var(--color-bg-tertiary);
    border-radius: 6px;
}

.content-area::-webkit-scrollbar-thumb:hover {
    background: var(--color-bg-hover);
}

.welcome-message {
    text-align: center;
    padding: var(--spacing-xl);
    max-width: 600px;
    margin: 100px auto;
}

.welcome-message h2 {
    margin-bottom: var(--spacing-md);
}

.content-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-xl);
}

.album-details h2 {
    margin-bottom: var(--spacing-sm);
}

.btn-play-all {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background-color: var(--color-primary);
    color: white;
    border: none;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: 24px;
    cursor: pointer;
    font-size: var(--font-size-base);
    font-weight: 600;
    transition: var(--transition);
}

.btn-play-all:hover {
    background-color: var(--color-primary-hover);
    transform: scale(1.05);
}

/* Track List */
.track-list {
    background-color: var(--color-bg-secondary);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
}

.track-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    cursor: pointer;
    transition: var(--transition);
}

.track-item:last-child {
    border-bottom: none;
}

.track-item:hover {
    background-color: var(--color-bg-hover);
}

.track-number {
    width: 32px;
    text-align: center;
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.track-details {
    flex: 1;
}

.track-name {
    font-size: var(--font-size-base);
    font-weight: 500;
    margin-bottom: 2px;
}

.track-meta {
    font-size: var(--font-size-xs);
}

.track-format {
    font-size: var(--font-size-xs);
    text-transform: uppercase;
}

/* Now Playing Bar */
.now-playing-bar {
    background-color: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    height: var(--player-height);
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-md);
    gap: var(--spacing-lg);
    z-index: 100;
}

.now-playing-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    width: 280px;
    min-width: 0;
}

.album-art {
    width: 56px;
    height: 56px;
    background-color: var(--color-bg-tertiary);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.album-art svg {
    color: var(--color-text-secondary);
}

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

.track-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 2px;
}

.track-artist {
    font-size: var(--font-size-xs);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Playback Controls */
.playback-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.control-btn {
    background: none;
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

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

.control-btn.play-btn {
    background-color: var(--color-primary);
    color: white;
    padding: var(--spacing-md);
}

.control-btn.play-btn:hover {
    background-color: var(--color-primary-hover);
    transform: scale(1.05);
}

.control-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Progress Section */
.progress-section {
    flex: 1;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    min-width: 0;
}

.time-display {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    font-variant-numeric: tabular-nums;
    width: 40px;
}

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

.progress-bar:hover {
    height: 6px;
}

.progress-bar-buffered {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background-color: var(--color-bg-hover);
    border-radius: 2px;
    transition: width 0.3s ease;
}

.progress-bar-fill {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background-color: var(--color-primary);
    border-radius: 2px;
    transition: width 0.1s linear;
}

.progress-bar:hover .progress-bar-fill::after {
    content: '';
    position: absolute;
    right: -6px;
    top: 50%;
    transform: translateY(-50%);
    width: 12px;
    height: 12px;
    background-color: white;
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* Volume Control */
.volume-control {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    width: 140px;
}

.control-btn-small {
    background: none;
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.control-btn-small:hover {
    color: var(--color-text);
}

.volume-slider {
    flex: 1;
    height: 4px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--color-bg-tertiary);
    border-radius: 2px;
    outline: none;
    cursor: pointer;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 12px;
    height: 12px;
    background: white;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    transition: var(--transition);
}

.volume-slider:hover::-webkit-slider-thumb {
    opacity: 1;
}

.volume-slider::-moz-range-thumb {
    width: 12px;
    height: 12px;
    background: white;
    border-radius: 50%;
    border: none;
    cursor: pointer;
    opacity: 0;
    transition: var(--transition);
}

.volume-slider:hover::-moz-range-thumb {
    opacity: 1;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.8);
    display: none;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: var(--spacing-md);
    z-index: 1000;
}

.loading-overlay.visible {
    display: flex;
}

/* Spinner */
.spinner {
    border: 3px solid var(--color-bg-tertiary);
    border-top: 3px solid var(--color-primary);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

.spinner.large {
    width: 60px;
    height: 60px;
    border-width: 4px;
}

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

.loading-message {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-xl);
    color: var(--color-text-secondary);
}

/* Error Message */
.error-message {
    display: none;
    position: fixed;
    top: calc(var(--header-height) + var(--spacing-md));
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--color-error);
    color: white;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    z-index: 1000;
    max-width: 500px;
}

.error-message.visible {
    display: block;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

/* Buttons */
button, .btn {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    transition: var(--transition);
}

.btn-small {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --header-height: 56px;
        --player-height: 80px;
    }

    .menu-toggle {
        display: flex;
    }

    .header-title {
        font-size: var(--font-size-lg);
    }

    .library-panel {
        position: fixed;
        top: var(--header-height);
        left: 0;
        bottom: var(--player-height);
        width: 280px;
        z-index: 90;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        box-shadow: var(--shadow);
    }

    .library-panel.open {
        transform: translateX(0);
    }

    .content-area {
        width: 100%;
        padding: var(--spacing-md);
    }

    .now-playing-bar {
        flex-wrap: wrap;
        height: auto;
        min-height: var(--player-height);
        padding: var(--spacing-sm);
        gap: var(--spacing-sm);
    }

    .now-playing-info {
        width: 100%;
        order: 1;
    }

    .progress-section {
        width: 100%;
        order: 2;
    }

    .playback-controls {
        order: 3;
        flex: 1;
        justify-content: center;
    }

    .volume-control {
        order: 4;
        width: auto;
    }

    .volume-slider {
        width: 80px;
    }

    .content-header {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .btn-play-all {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .header-content {
        padding: 0 var(--spacing-md);
    }

    .album-art {
        width: 48px;
        height: 48px;
    }

    .control-btn svg {
        width: 20px;
        height: 20px;
    }

    .control-btn.play-btn svg {
        width: 28px;
        height: 28px;
    }

    .time-display {
        width: 35px;
        font-size: 10px;
    }
}