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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: #f9f9f9;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
.header {
    margin-bottom: 30px;
    padding: 20px 0;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.header-content > div {
    text-align: center;
    flex: 1;
}

.header h1 {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 10px;
}

.header .subtitle {
    font-size: 1.1rem;
    color: #7f8c8d;
}

.dark-mode-toggle {
    background: #ffffff;
    border: 2px solid #e0e0e0;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
}

.dark-mode-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Controls */
.controls {
    background: #ffffff;
    border-radius: 16px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    align-items: flex-end;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.control-group label {
    font-size: 0.9rem;
    font-weight: 600;
    color: #555;
}

.search-group {
    flex: 1;
    min-width: 250px;
}

/* Version Selector */
.version-selector {
    background: #ffffff;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    padding: 10px 16px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.version-selector:hover {
    border-color: #4CAF50;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.version-selector:focus {
    outline: none;
    border-color: #4CAF50;
}

/* Search Input */
.search-input {
    background: #ffffff;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    padding: 10px 16px;
    font-size: 1rem;
    width: 100%;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.search-input:hover {
    border-color: #2196F3;
}

.search-input:focus {
    outline: none;
    border-color: #2196F3;
    box-shadow: 0 4px 12px rgba(33, 150, 243, 0.2);
}

/* Control Buttons */
.control-btn {
    background: #ffffff;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    padding: 10px 20px;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    white-space: nowrap;
}

.control-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border-color: #4CAF50;
}

.control-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.control-btn.active {
    background: #4CAF50;
    color: white;
    border-color: #4CAF50;
}

.import-label {
    display: inline-block;
}

/* Category Filters */
.category-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}

.filter-btn {
    background: #ffffff;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    padding: 8px 16px;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    gap: 6px;
}

.filter-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border-color: #2196F3;
}

.filter-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.filter-btn.active {
    background: #2196F3;
    color: white;
    border-color: #2196F3;
}

/* Loading State */
.loading-state {
    text-align: center;
    padding: 60px 20px;
}

.spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #4CAF50;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

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

/* Error State */
.error-state {
    background: #fff3f3;
    border: 2px solid #ff6b6b;
    border-radius: 16px;
    padding: 40px 20px;
    text-align: center;
}

.error-message {
    color: #e74c3c;
    font-size: 1.1rem;
    margin-bottom: 20px;
}

.retry-btn {
    background: #e74c3c;
    color: white;
    border: 2px solid #e74c3c;
    border-radius: 12px;
    padding: 10px 24px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.retry-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(231, 76, 60, 0.3);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #7f8c8d;
    font-size: 1.1rem;
}

/* Sounds Grid */
.sounds-grid {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 40px;
}

/* Tree Structure */
.tree-group {
    background: transparent;
    border-left: 2px solid #e0e0e0;
    padding-left: 10px;
}

.tree-group-header {
    background: #f5f5f5;
    border-radius: 8px;
    padding: 10px 15px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
    margin-bottom: 10px;
}

.tree-group-header:hover {
    background: #e8e8e8;
    transform: translateX(5px);
}

.tree-toggle {
    font-size: 0.8rem;
    transition: transform 0.3s ease;
    user-select: none;
}

.tree-group-name {
    font-weight: 600;
    font-size: 1rem;
    color: #2c3e50;
}

.tree-group-content {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 10px;
}

/* Sound Card */
.sound-card {
    background: #ffffff;
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    max-width: 800px;
}

.sound-card:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    transform: translateY(-4px);
}

.sound-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.category-badge {
    background: #f5f5f5;
    border-radius: 20px;
    padding: 6px 12px;
    font-size: 0.85rem;
    font-weight: 600;
    color: #555;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.favorite-btn {
    background: transparent;
    border: none;
    font-size: 1.4rem;
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 4px;
}

.favorite-btn:hover {
    transform: scale(1.2);
}

.favorite-btn.favorited {
    filter: drop-shadow(0 0 4px rgba(255, 193, 7, 0.5));
}

.sound-content {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    margin-bottom: 16px;
}

.sound-render-container {
    width: 64px;
    height: 64px;
    position: relative;
    flex-shrink: 0;
}

.sound-render {
    width: 64px;
    height: 64px;
    border-radius: 8px;
    background: transparent;
    border: none;
    pointer-events: none;
}

.loading-spinner {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 8px;
    z-index: 1;
}

.spinner-icon {
    width: 24px;
    height: 24px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #4CAF50;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.error-icon {
    font-size: 1.5rem;
}

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

.sound-name {
    font-size: 1.2rem;
    color: #2c3e50;
    margin-bottom: 8px;
    word-break: break-word;
}

.sound-subtitle {
    font-size: 0.9rem;
    color: #7f8c8d;
    font-style: italic;
}

.sound-files {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sound-file-row {
    display: flex;
    gap: 8px;
    align-items: stretch;
}

.play-btn {
    background: #ffffff;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    padding: 10px 16px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    text-align: left;
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
}

.play-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border-color: #4CAF50;
}

.play-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.play-btn.playing {
    background: #4CAF50;
    color: white;
    border-color: #4CAF50;
}

.play-btn .icon {
    font-size: 1rem;
}

.play-btn .filename {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.copy-btn {
    background: #ffffff;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    padding: 10px 12px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
}

.copy-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border-color: #2196F3;
    background: #e3f2fd;
}

/* Footer */
.footer {
    text-align: center;
    padding: 40px 20px 20px;
    color: #7f8c8d;
    font-size: 0.9rem;
}

.footer a {
    color: #4CAF50;
    text-decoration: none;
    font-weight: 600;
}

.footer a:hover {
    text-decoration: underline;
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: -100px;
    left: 50%;
    transform: translateX(-50%);
    background: #333;
    color: white;
    padding: 16px 24px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    transition: bottom 0.3s ease;
    z-index: 1000;
    max-width: 90%;
    text-align: center;
}

.toast.show {
    bottom: 30px;
}

.toast.error {
    background: #e74c3c;
}

.toast.success {
    background: #4CAF50;
}

/* Dark Mode */
body.dark-mode {
    background-color: #1a1a1a;
    color: #e0e0e0;
}

body.dark-mode .header h1 {
    color: #ffffff;
}

body.dark-mode .header .subtitle {
    color: #b0b0b0;
}

body.dark-mode .dark-mode-toggle {
    background: #2d2d2d;
    border-color: #444;
}

body.dark-mode .controls {
    background: #2d2d2d;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

body.dark-mode .control-group label {
    color: #b0b0b0;
}

body.dark-mode .version-selector,
body.dark-mode .search-input,
body.dark-mode .control-btn,
body.dark-mode .import-label {
    background: #1a1a1a;
    border-color: #444;
    color: #e0e0e0;
}

body.dark-mode .version-selector:hover,
body.dark-mode .search-input:hover,
body.dark-mode .control-btn:hover {
    border-color: #4CAF50;
}

body.dark-mode .control-btn.active {
    background: #4CAF50;
    color: white;
}

body.dark-mode .filter-btn {
    background: #2d2d2d;
    border-color: #444;
    color: #e0e0e0;
}

body.dark-mode .filter-btn:hover {
    border-color: #2196F3;
}

body.dark-mode .filter-btn.active {
    background: #2196F3;
    color: white;
}

body.dark-mode .sound-card {
    background: #2d2d2d;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

body.dark-mode .sound-card:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
}

body.dark-mode .category-badge {
    background: #1a1a1a;
    color: #b0b0b0;
}

body.dark-mode .sound-name {
    color: #ffffff;
}

body.dark-mode .sound-subtitle {
    color: #b0b0b0;
}

body.dark-mode .play-btn,
body.dark-mode .copy-btn {
    background: #1a1a1a;
    border-color: #444;
    color: #e0e0e0;
}

body.dark-mode .play-btn:hover {
    border-color: #4CAF50;
}

body.dark-mode .copy-btn:hover {
    border-color: #2196F3;
    background: #1e3a5f;
}

body.dark-mode .play-btn.playing {
    background: #4CAF50;
    color: white;
}

body.dark-mode .error-state {
    background: #3d1f1f;
    border-color: #ff6b6b;
}

body.dark-mode .empty-state {
    color: #b0b0b0;
}

body.dark-mode .footer {
    color: #b0b0b0;
}

body.dark-mode .footer a {
    color: #4CAF50;
}

body.dark-mode .sound-render {
    background: transparent;
}

body.dark-mode .loading-spinner {
    background: rgba(42, 42, 42, 0.9);
}

body.dark-mode .spinner-icon {
    border-color: #444;
    border-top-color: #4CAF50;
}

body.dark-mode .tree-group {
    border-left-color: #444;
}

body.dark-mode .tree-group-header {
    background: #2d2d2d;
}

body.dark-mode .tree-group-header:hover {
    background: #383838;
}

body.dark-mode .tree-group-name {
    color: #ffffff;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header h1 {
        font-size: 2rem;
    }

    .controls {
        flex-direction: column;
        align-items: stretch;
    }

    .control-group {
        width: 100%;
    }

    .sounds-grid {
        grid-template-columns: 1fr;
    }

    .category-filters {
        justify-content: center;
    }

    .header-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 1.5rem;
    }

    .sound-card {
        padding: 16px;
    }

    .container {
        padding: 15px;
    }
}