/* ============================================
   Source Map Explorer — Styles
   Theme: Dark mode with Electric Indigo palette
   ============================================ */

/* --- Reset & Variables --- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --primary: #5352ED;
    --primary-hover: #6361FF;
    --secondary: #7C7CFF;
    --accent: #2ED573;
    --accent-hover: #3CE882;
    --bg: #0A0A1A;
    --bg-card: rgba(20, 20, 45, 0.7);
    --bg-card-hover: rgba(30, 30, 60, 0.8);
    --bg-input: rgba(25, 25, 55, 0.6);
    --border: rgba(83, 82, 237, 0.2);
    --border-hover: rgba(83, 82, 237, 0.45);
    --text: #E8E8F0;
    --text-muted: #9898B8;
    --text-dim: #6868A0;
    --danger: #FF6B6B;
    --warning: #FFB84D;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-xs: 6px;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --transition: 250ms ease;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --glass: blur(12px);
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* --- Screen Reader Only --- */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* --- Hidden --- */
.hidden {
    display: none !important;
}

/* --- Header --- */
.app-header {
    background: linear-gradient(135deg, rgba(83, 82, 237, 0.15), rgba(124, 124, 255, 0.08));
    border-bottom: 1px solid var(--border);
    backdrop-filter: var(--glass);
    -webkit-backdrop-filter: var(--glass);
    padding: 1.5rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo h1 {
    font-size: 1.25rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.tagline {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* --- Main --- */
.app-main {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* --- Upload Section --- */
.upload-section {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.upload-zone {
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    padding: 3.5rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
    background: var(--bg-card);
    backdrop-filter: var(--glass);
    -webkit-backdrop-filter: var(--glass);
    position: relative;
    overflow: hidden;
}

.upload-zone::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, rgba(83, 82, 237, 0.08), transparent 70%);
    pointer-events: none;
}

.upload-zone:hover,
.upload-zone:focus-visible,
.upload-zone.drag-over {
    border-color: var(--primary);
    background: var(--bg-card-hover);
    box-shadow: var(--shadow-md), 0 0 30px rgba(83, 82, 237, 0.1);
    transform: translateY(-2px);
}

.upload-zone:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.upload-zone.drag-over {
    border-color: var(--accent);
    box-shadow: var(--shadow-md), 0 0 40px rgba(46, 213, 115, 0.15);
}

.upload-icon {
    margin-bottom: 1rem;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-6px);
    }
}

.upload-zone h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text);
}

.upload-zone h2 code {
    color: var(--accent);
    background: rgba(46, 213, 115, 0.1);
    padding: 0.15rem 0.4rem;
    border-radius: var(--radius-xs);
    font-size: 1.1rem;
}

.upload-zone p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.upload-hint {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.8rem;
    color: var(--text-dim);
}

.upload-hint code {
    color: var(--secondary);
    font-size: 0.8rem;
}

.hint-badge {
    background: rgba(83, 82, 237, 0.2);
    color: var(--secondary);
    padding: 0.15rem 0.5rem;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* --- Controls --- */
.controls-section {
    position: sticky;
    top: 70px;
    z-index: 90;
}

.controls-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    background: var(--bg-card);
    backdrop-filter: var(--glass);
    -webkit-backdrop-filter: var(--glass);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.75rem 1rem;
    box-shadow: var(--shadow-sm);
    flex-wrap: wrap;
}

.control-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.control-actions {
    flex-wrap: wrap;
}

.search-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.search-icon {
    position: absolute;
    left: 0.75rem;
    color: var(--text-dim);
    pointer-events: none;
}

#search-input {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    padding: 0.5rem 0.75rem 0.5rem 2.25rem;
    font-size: 0.875rem;
    font-family: var(--font);
    width: 280px;
    transition: all var(--transition);
}

#search-input::placeholder {
    color: var(--text-dim);
}

#search-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(83, 82, 237, 0.15);
}

.select-control {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    padding: 0.5rem 0.75rem;
    font-size: 0.85rem;
    font-family: var(--font);
    cursor: pointer;
    transition: all var(--transition);
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M3 5l3 3 3-3' stroke='%239898B8' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.6rem center;
    padding-right: 2rem;
}

.select-control:focus {
    outline: none;
    border-color: var(--primary);
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 0.85rem;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-family: var(--font);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    box-shadow: 0 2px 10px rgba(83, 82, 237, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 4px 16px rgba(83, 82, 237, 0.5);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--bg-input);
    color: var(--text-muted);
    border: 1px solid var(--border);
}

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

.btn-icon {
    background: transparent;
    color: var(--text-muted);
    padding: 0.4rem;
    border-radius: var(--radius-xs);
}

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

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none !important;
}

.btn:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* --- Treemap Section --- */
.treemap-section {
    animation: fadeUp 400ms ease;
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(12px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.treemap-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.treemap-header h2 {
    font-size: 1.1rem;
    font-weight: 600;
}

.treemap-stats {
    display: flex;
    gap: 1.25rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.treemap-stats .stat {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.treemap-stats .stat-value {
    color: var(--text);
    font-weight: 600;
}

.treemap-container {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    position: relative;
    min-height: 400px;
    box-shadow: var(--shadow-md);
}

#treemap-canvas {
    width: 100%;
    height: 500px;
    display: block;
    cursor: pointer;
}

.treemap-breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    margin-top: 0.75rem;
    font-size: 0.8rem;
    color: var(--text-dim);
    flex-wrap: wrap;
}

.breadcrumb-item {
    cursor: pointer;
    color: var(--text-muted);
    transition: color var(--transition);
    padding: 0.2rem 0.4rem;
    border-radius: var(--radius-xs);
}

.breadcrumb-item:hover {
    color: var(--primary);
}

.breadcrumb-item.active {
    color: var(--text);
    font-weight: 600;
    cursor: default;
}

.breadcrumb-sep {
    color: var(--text-dim);
}

/* --- Tooltip (for treemap hover) --- */
.treemap-tooltip {
    position: fixed;
    background: rgba(15, 15, 35, 0.95);
    backdrop-filter: var(--glass);
    -webkit-backdrop-filter: var(--glass);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.65rem 0.85rem;
    pointer-events: none;
    z-index: 200;
    box-shadow: var(--shadow-lg);
    max-width: 350px;
    font-size: 0.8rem;
    transition: opacity 150ms ease;
}

.treemap-tooltip .tooltip-name {
    font-weight: 600;
    color: var(--text);
    margin-bottom: 0.25rem;
    word-break: break-all;
}

.treemap-tooltip .tooltip-size {
    color: var(--accent);
    font-weight: 600;
}

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

/* --- Section Headers --- */
.section-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.section-header h2 {
    font-size: 1.1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.badge {
    background: rgba(83, 82, 237, 0.2);
    color: var(--secondary);
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge.danger {
    background: rgba(255, 107, 107, 0.2);
    color: var(--danger);
}

/* --- Duplicates --- */
.duplicates-section {
    animation: fadeUp 400ms ease 100ms both;
}

.duplicates-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.duplicate-item {
    background: var(--bg-card);
    border: 1px solid rgba(255, 107, 107, 0.15);
    border-radius: var(--radius-sm);
    padding: 0.75rem 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    transition: all var(--transition);
}

.duplicate-item:hover {
    border-color: rgba(255, 107, 107, 0.35);
    background: var(--bg-card-hover);
}

.duplicate-name {
    font-weight: 500;
    color: var(--text);
    word-break: break-all;
    font-size: 0.875rem;
}

.duplicate-info {
    display: flex;
    gap: 0.75rem;
    font-size: 0.8rem;
    color: var(--text-muted);
    white-space: nowrap;
}

.duplicate-count {
    color: var(--danger);
    font-weight: 600;
}

/* --- Breakdown Table --- */
.breakdown-section {
    animation: fadeUp 400ms ease 200ms both;
}

.table-wrapper {
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-card);
}

.breakdown-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.breakdown-table thead {
    background: rgba(83, 82, 237, 0.1);
}

.breakdown-table th {
    padding: 0.75rem 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-muted);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
    user-select: none;
}

.breakdown-table th.sortable {
    cursor: pointer;
    transition: color var(--transition);
}

.breakdown-table th.sortable:hover {
    color: var(--primary);
}

.breakdown-table th.sorted-asc::after {
    content: ' ↑';
    color: var(--accent);
}

.breakdown-table th.sorted-desc::after {
    content: ' ↓';
    color: var(--accent);
}

.breakdown-table td {
    padding: 0.6rem 1rem;
    border-bottom: 1px solid rgba(83, 82, 237, 0.08);
    color: var(--text);
    vertical-align: middle;
}

.breakdown-table tbody tr {
    transition: background var(--transition);
    cursor: pointer;
}

.breakdown-table tbody tr:hover {
    background: var(--bg-card-hover);
}

.breakdown-table tbody tr:last-child td {
    border-bottom: none;
}

.file-path {
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    font-size: 0.8rem;
    word-break: break-all;
}

.file-dir {
    color: var(--text-dim);
}

.file-name {
    color: var(--text);
    font-weight: 500;
}

.size-cell {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-weight: 500;
    white-space: nowrap;
}

.percent-cell {
    color: var(--text-muted);
    font-family: 'SF Mono', 'Fira Code', monospace;
    white-space: nowrap;
}

.bar-cell {
    width: 150px;
    min-width: 100px;
}

.size-bar {
    height: 6px;
    background: rgba(83, 82, 237, 0.15);
    border-radius: 999px;
    overflow: hidden;
}

.size-bar-fill {
    height: 100%;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transition: width 500ms ease;
}

/* --- Preview --- */
.preview-section {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    animation: fadeUp 300ms ease;
}

.preview-content {
    background: rgba(10, 10, 26, 0.8);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 1rem;
    overflow-x: auto;
    max-height: 400px;
    overflow-y: auto;
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    font-size: 0.8rem;
    line-height: 1.7;
    color: var(--text-muted);
    tab-size: 2;
}

/* --- Comparison --- */
.comparison-section {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    animation: fadeUp 300ms ease;
}

.comparison-content {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.comparison-row {
    display: grid;
    grid-template-columns: 1fr auto auto auto;
    gap: 1rem;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-xs);
    font-size: 0.85rem;
    align-items: center;
}

.comparison-row:nth-child(even) {
    background: rgba(83, 82, 237, 0.04);
}

.comparison-row .comp-name {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.8rem;
    word-break: break-all;
}

.comparison-row .comp-size {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-weight: 500;
    white-space: nowrap;
}

.comparison-row .comp-diff {
    font-weight: 600;
    white-space: nowrap;
}

.comp-diff.positive {
    color: var(--danger);
}

.comp-diff.negative {
    color: var(--accent);
}

.comp-diff.neutral {
    color: var(--text-dim);
}

/* --- Footer --- */
.app-footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-dim);
    font-size: 0.8rem;
    border-top: 1px solid var(--border);
    margin-top: 2rem;
}

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

    .header-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }

    .app-main {
        padding: 1rem;
    }

    .upload-zone {
        padding: 2rem 1rem;
    }

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

    #search-input {
        width: 100%;
    }

    .control-actions {
        justify-content: flex-start;
    }

    #treemap-canvas {
        height: 300px;
    }

    .breakdown-table th:nth-child(4),
    .breakdown-table td:nth-child(4) {
        display: none;
    }

    .comparison-row {
        grid-template-columns: 1fr auto auto;
    }
}

@media (max-width: 480px) {
    .controls-bar {
        padding: 0.6rem;
    }

    .btn {
        padding: 0.4rem 0.6rem;
        font-size: 0.8rem;
    }

    .treemap-stats {
        flex-direction: column;
        gap: 0.25rem;
    }
}