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

:root {
    --primary-color: #4a9eff;
    --primary-hover: #6bb0ff;
    --link-color: #58a6ff;
    --link-hover: #79b8ff;
    --secondary-color: #495057;
    --secondary-hover: #5a6268;
    --success-color: #28a745;
    --success-light: #48d368;
    --warning-color: #ffc107;
    --warning-light: #ffd454;
    --danger-color: #b94a52;
    --danger-hover: #c85a63;
    --bg-color: #0a0e12;
    --card-bg: #1a1f26;
    --card-hover: #242a32;
    --text-primary: #e8eaed;
    --text-secondary: #b8bdc4;
    --text-muted: #868e96;
    --border-color: #2d3339;
    --border-light: #3d444c;
    --input-bg: #141820;
    --shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.4), 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 16px 0 rgba(0, 0, 0, 0.6), 0 4px 8px 0 rgba(0, 0, 0, 0.4);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
}

a {
    color: var(--link-color);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--link-hover);
    text-decoration: underline;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.header-calendar {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.header-calendar input {
    width: 280px;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-light);
    border-radius: 0.5rem;
    font-size: 0.75rem;
    background: var(--input-bg);
    color: var(--text-primary);
}

.header-calendar input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 158, 255, 0.15);
}

.header-actions {
    display: flex;
    gap: 0.75rem;
}

/* Buttons */
.btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    text-align: center;
    justify-content: center;
    gap: 0.5rem;
    box-shadow: var(--shadow);
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn:active {
    transform: translateY(0);
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

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

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

.btn-secondary:hover {
    background: var(--secondary-hover);
}

.btn-small {
    padding: 0.375rem 0.75rem;
    font-size: 0.813rem;
}

.btn-danger {
    background: var(--danger-color);
    color: white;
}

.btn-danger:hover {
    background: var(--danger-hover);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.stat-card {
    background: var(--card-bg);
    padding: 1rem;
    border-radius: 0.5rem;
    box-shadow: var(--shadow);
    border-left: 4px solid;
    border: 1px solid var(--border-color);
    border-left: 4px solid;
}

.stat-missing {
    border-left-color: var(--danger-color);
}

.stat-new {
    border-left-color: var(--success-color);
}

.stat-upcoming {
    border-left-color: var(--warning-color);
}

.stat-total {
    border-left-color: var(--primary-color);
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.stat-label {
    font-size: 0.813rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Collection Status */
.collection-status {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    color: white;
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    animation: pulse 2s ease-in-out infinite;
    border: 1px solid var(--primary-color);
    box-shadow: 0 4px 12px rgba(74, 158, 255, 0.25);
}

.status-content {
    display: flex;
    align-items: center;
    gap: 1rem;
}

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

.status-text {
    font-weight: 500;
}

.status-progress {
    margin-left: auto;
    font-size: 0.875rem;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.9;
    }
}

/* Tabs */
.tabs {
    display: flex;
    gap: 0.25rem;
    margin-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.tab-btn {
    padding: 0.5rem 1rem;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all 0.2s;
    margin-bottom: -2px;
}

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

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

/* Controls */
.controls {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    align-items: center;
}

#searchInput {
    flex: 1;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-light);
    border-radius: 0.5rem;
    font-size: 0.875rem;
    background: var(--input-bg);
    color: var(--text-primary);
}

#searchInput:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 158, 255, 0.15);
}

#searchInput::placeholder {
    color: var(--text-muted);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    cursor: pointer;
    user-select: none;
    white-space: nowrap;
}

.checkbox-label input[type="checkbox"] {
    cursor: pointer;
    width: 1rem;
    height: 1rem;
}

.checkbox-label span {
    color: var(--text-primary);
    font-size: 0.875rem;
}

.sort-select, .ignored-filter {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-light);
    border-radius: 0.5rem;
    font-size: 0.875rem;
    background: var(--input-bg);
    color: var(--text-primary);
    cursor: pointer;
    min-width: 160px;
}

.sort-select:focus, .ignored-filter:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 158, 255, 0.15);
}

.ignored-filter {
    min-width: 160px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.938rem;
    cursor: pointer;
    user-select: none;
    color: var(--text-primary);
}

.checkbox-label input[type="checkbox"] {
    width: 1.125rem;
    height: 1.125rem;
    cursor: pointer;
}

/* Tab Content */
.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

/* Albums List */
.albums-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
}

.album-card {
    background: var(--card-bg);
    padding: 0.75rem;
    border-radius: 0.5rem;
    box-shadow: var(--shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.2s;
    border: 1px solid var(--border-color);
}

.album-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
    background: var(--card-hover);
    border-color: var(--border-light);
}

.album-card.ignored {
    opacity: 0.5;
    background: var(--bg-color);
    border-color: var(--border-color);
}

.album-info {
    flex: 1;
}

.album-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.125rem;
    color: var(--text-primary);
}

.album-artist {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
}

.album-meta {
    display: flex;
    gap: 0.75rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.badge {
    display: inline-block;
    padding: 0.0rem 0.4rem;
    border-radius: 9999px;
    font-size: 0.688rem;
    font-weight: 500;
}

.badge-missing {
    background: rgba(185, 74, 82, 0.2);
    color: #e89199;
    border: 1px solid var(--danger-color);
    font-weight: 600;
}

.badge-new {
    background: rgba(40, 167, 69, 0.2);
    color: var(--success-light);
    border: 1px solid var(--success-color);
    font-weight: 600;
}

.badge-upcoming {
    background: rgba(255, 193, 7, 0.2);
    color: var(--warning-light);
    border: 1px solid var(--warning-color);
    font-weight: 600;
}

.badge-ignored {
    background: rgba(45, 51, 57, 0.5);
    color: var(--text-muted);
    border: 1px solid var(--border-color);
    font-weight: 600;
}

.badge-ep {
    background: rgba(156, 39, 176, 0.2);
    color: #ce93d8;
    border: 1px solid rgba(156, 39, 176, 0.5);
    font-weight: 600;
}

.badge-existing {
    background: rgba(74, 158, 255, 0.2);
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    font-weight: 600;
}

.album-actions {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

/* Cover Art */
.album-cover-container {
    width: 60px;
    height: 60px;
    flex-shrink: 0;
    margin-right: 0.75rem;
    border-radius: 0.5rem;
    overflow: hidden;
    background: var(--input-bg);
    position: relative;
}

.album-cover {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.2s;
}

.album-card:hover .album-cover {
    transform: scale(1.05);
}

.album-cover-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--input-bg) 0%, var(--border-color) 100%);
    color: var(--text-muted);
    font-size: 1.5rem;
}

.album-cover-placeholder .no-cover {
    font-size: 0.625rem;
    text-align: center;
    color: var(--text-secondary);
}

/* Artists List */
.artists-list {
    display: grid;
    gap: 0.5rem;
}

.artist-card-wrapper {
    background: var(--card-bg);
    border-radius: 0.5rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: all 0.2s;
}

.artist-card-wrapper:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
    background: var(--card-hover);
    border-color: var(--border-light);
}

.artist-card-wrapper.ignored {
    opacity: 0.5;
    background: var(--bg-color);
    border-color: var(--border-color);
}

.artist-card {
    padding: 0.75rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.artist-info {
    flex: 1;
}

.artist-name {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.125rem;
    color: var(--text-primary);
}

.artist-meta {
    font-size: 0.813rem;
    color: var(--text-secondary);
}

.clickable {
    cursor: pointer;
    user-select: none;
}

.clickable:hover .artist-name {
    color: var(--primary-color);
}

.artist-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 0.25rem;
}

.stat-item {
    font-size: 0.75rem;
}

.stat-item strong {
    font-weight: 700;
}

.stat-item.stat-missing {
    color: #e89199;
}

.stat-item.stat-new {
    color: var(--success-light);
}

.stat-item.stat-upcoming {
    color: var(--warning-light);
}

.stat-item.stat-existing {
    color: var(--primary-color);
}

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

.artist-detail {
    padding: 0.75rem;
    border-top: 1px solid var(--border-light);
}

.artist-albums-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 0.5rem;
}

/* Loading */
.loading {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.loading::before {
    content: '';
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.empty-state {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
}

/* Toast */
.toast {
    position: fixed;
    bottom: 1rem;
    right: 1rem;
    padding: 0.75rem 1rem;
    background: var(--card-bg);
    color: var(--text-primary);
    border-radius: 0.5rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-light);
    opacity: 0;
    transform: translateY(1rem);
    transition: all 0.3s;
    pointer-events: none;
    z-index: 1000;
    font-weight: 500;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.toast.success {
    background: var(--success-color);
    color: white;
    border-color: var(--success-light);
    box-shadow: 0 8px 16px rgba(40, 167, 69, 0.3);
}

.toast.error {
    background: var(--danger-color);
    color: white;
    border-color: var(--danger-hover);
    box-shadow: 0 8px 16px rgba(185, 74, 82, 0.3);
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .header-right {
        flex-direction: column;
        align-items: stretch;
        width: 100%;
        gap: 0.75rem;
    }

    .header-calendar {
        width: 100%;
    }

    .header-calendar input {
        width: 100%;
    }

    .header-actions {
        width: 100%;
        justify-content: flex-start;
    }

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

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

    .albums-list, .artist-albums-grid {
        grid-template-columns: 1fr;
    }

    .album-card {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .artist-card-wrapper .artist-card {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .album-actions {
        width: 100%;
    }
}