/* ═══════════════════════════════════════════════════════════════
   SVG Checker & Label Generator — Styles
   Dark theme, glassmorphism, modern UI
   ═══════════════════════════════════════════════════════════════ */

:root {
    --bg-primary: #0f0f13;
    --bg-secondary: #16161d;
    --bg-card: #1c1c27;
    --bg-card-hover: #22222f;
    --bg-input: #12121a;
    --border: #2a2a3a;
    --border-hover: #3a3a52;
    --text-primary: #e8e8ed;
    --text-secondary: #8e8ea0;
    --text-muted: #5c5c72;
    --accent: #6366f1;
    --accent-hover: #818cf8;
    --accent-glow: rgba(99, 102, 241, 0.15);
    --success: #22c55e;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #3b82f6;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-xs: 6px;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
    --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

/* ─── Header ────────────────────────────────────────────────── */

.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(15, 15, 19, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

.header-content {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 24px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo h1 {
    font-size: 18px;
    font-weight: 700;
    background: linear-gradient(135deg, #6366f1, #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.canvas-selector {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary);
}

.canvas-selector select {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-xs);
    color: var(--text-primary);
    padding: 6px 10px;
    font-size: 13px;
    font-family: inherit;
    cursor: pointer;
    transition: border-color var(--transition);
}

.canvas-selector select:hover {
    border-color: var(--border-hover);
}

/* ─── Buttons ───────────────────────────────────────────────── */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: none;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
}

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

.btn-primary:hover {
    background: var(--accent-hover);
    box-shadow: 0 0 20px var(--accent-glow);
}

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

.btn-secondary:hover {
    border-color: var(--accent);
    color: var(--accent-hover);
}

/* ─── Upload Zone ───────────────────────────────────────────── */

.upload-zone {
    max-width: 640px;
    margin: 0 auto;
    padding: 80px 24px;
}

.upload-area {
    border: 2px dashed var(--border);
    border-radius: 20px;
    padding: 60px 40px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
    background: var(--bg-secondary);
}

.upload-area:hover,
.upload-area.drag-over {
    border-color: var(--accent);
    background: var(--accent-glow);
}

.upload-icon {
    margin-bottom: 20px;
}

.upload-area h2 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
}

.upload-area p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 24px;
}

/* ─── Stats Bar ─────────────────────────────────────────────── */

.stats-bar {
    display: flex;
    gap: 12px;
    padding: 16px 24px;
    max-width: 1440px;
    margin: 0 auto;
    flex-wrap: wrap;
}

.stat-chip {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 13px;
}

.stat-chip .stat-value {
    font-weight: 700;
    color: var(--accent-hover);
}

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

/* ─── Panel Grid ────────────────────────────────────────────── */

.main-content {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 24px 40px;
}

.panel-grid {
    display: grid;
    grid-template-columns: 1fr 420px;
    gap: 16px;
    min-height: calc(100vh - 200px);
}

.panel-stack {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.panel {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.panel-header h3 {
    font-size: 14px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    height: 22px;
    padding: 0 7px;
    border-radius: 100px;
    font-size: 11px;
    font-weight: 700;
    background: var(--accent-glow);
    color: var(--accent-hover);
}

.badge.error { background: rgba(239,68,68,0.15); color: var(--error); }
.badge.warning { background: rgba(245,158,11,0.15); color: var(--warning); }
.badge.success { background: rgba(34,197,94,0.15); color: var(--success); }

/* ─── Tabs ──────────────────────────────────────────────────── */

.panel-tabs {
    display: flex;
    gap: 2px;
    background: var(--bg-input);
    border-radius: var(--radius-xs);
    padding: 2px;
}

.tab {
    padding: 5px 12px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-family: inherit;
    font-size: 12px;
    font-weight: 600;
    border-radius: 5px;
    cursor: pointer;
    transition: all var(--transition);
}

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

.tab.active {
    background: var(--bg-card);
    color: var(--text-primary);
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

/* ─── Preview Container ─────────────────────────────────────── */

.panel-body {
    flex: 1;
    overflow: auto;
}

.preview-container {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    background: var(--bg-input);
    position: relative;
}

.svg-canvas {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.svg-canvas svg {
    max-width: 100%;
    max-height: calc(100vh - 260px);
    border-radius: 4px;
}

.zoom-reset-btn {
    position: absolute;
    top: 12px;
    right: 12px;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background: rgba(15, 15, 19, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    z-index: 10;
    transition: all var(--transition);
}

.zoom-reset-btn:hover {
    border-color: var(--accent);
    color: var(--accent-hover);
    box-shadow: 0 0 15px var(--accent-glow);
}

/* ─── Issue List ────────────────────────────────────────────── */

.issue-list {
    max-height: 280px;
}

.issue-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 10px 16px;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    transition: background var(--transition);
    font-size: 13px;
}

.issue-item:hover {
    background: var(--bg-card-hover);
}

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

.issue-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-top: 5px;
    flex-shrink: 0;
}

.issue-dot.error { background: var(--error); }
.issue-dot.warning { background: var(--warning); }
.issue-dot.info { background: var(--info); }

.issue-message {
    color: var(--text-secondary);
    line-height: 1.5;
}

.empty-state {
    padding: 32px;
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
}

.issue-group-header {
    padding: 10px 16px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    background: var(--bg-input);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.unfillable-header {
    cursor: pointer;
    color: var(--error);
    background: rgba(239, 68, 68, 0.06);
    transition: background var(--transition);
}

.unfillable-header:hover {
    background: rgba(239, 68, 68, 0.1);
}

.toggle-icon {
    font-size: 10px;
    color: var(--text-muted);
    transition: transform var(--transition);
}

.unfillable-item {
    padding-left: 20px;
    border-left: 3px solid var(--error);
}

.unfillable-item .issue-message {
    font-size: 12px;
}

.issue-icon {
    flex-shrink: 0;
    font-size: 12px;
    line-height: 1;
    margin-top: 2px;
}

/* ─── Unfillable Warnings Panel ────────────────────────────── */

.warnings-panel-header {
    background: rgba(239, 68, 68, 0.04);
}

.warnings-panel-header h3 {
    color: var(--error);
}

.warnings-summary {
    border-bottom: 1px solid var(--border);
}

.warnings-stats {
    display: flex;
    gap: 0;
}

.warning-stat {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 10px 8px;
    border-right: 1px solid var(--border);
}

.warning-stat:last-child {
    border-right: none;
}

.ws-icon { font-size: 14px; }
.ws-count { font-size: 18px; font-weight: 800; color: var(--text-primary); }
.ws-label { font-size: 10px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }

.warning-list {
    max-height: 320px;
}

.warning-color-group {
    border-bottom: 1px solid var(--border);
}

.warning-color-group:last-child {
    border-bottom: none;
}

.warning-color-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 14px;
    cursor: pointer;
    transition: background var(--transition);
    background: var(--bg-input);
}

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

.wcg-swatch {
    width: 18px;
    height: 18px;
    border-radius: 4px;
    flex-shrink: 0;
}

.wcg-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.wcg-hex {
    font-size: 12px;
    font-weight: 700;
    font-family: 'SF Mono', 'Fira Code', monospace;
    color: var(--text-primary);
}

.wcg-count {
    font-size: 11px;
    color: var(--text-muted);
}

.wcg-toggle {
    font-size: 10px;
    color: var(--text-muted);
    transition: transform var(--transition);
}

.warning-color-group.collapsed .wcg-toggle {
    transform: rotate(-90deg);
}

.warning-color-group.collapsed .warning-color-items {
    display: none;
}

.warning-color-items {
    border-top: 1px solid var(--border);
}

.warning-item {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 7px 14px 7px 28px;
    cursor: pointer;
    transition: background var(--transition);
    border-bottom: 1px solid rgba(42, 42, 58, 0.4);
    font-size: 12px;
}

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

.warning-item:hover {
    background: var(--bg-card-hover);
}

.wi-icon {
    flex-shrink: 0;
    font-size: 11px;
    line-height: 1.4;
}

.wi-message {
    color: var(--text-secondary);
    line-height: 1.4;
}

/* ─── Path / Color List ─────────────────────────────────────── */

.path-list {
    max-height: calc(100vh - 500px);
}

.color-swatch {
    width: 24px;
    height: 24px;
    border-radius: 6px;
    border: 1px solid var(--border);
    flex-shrink: 0;
}

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

.color-hex {
    font-weight: 600;
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 12px;
}

.color-count {
    color: var(--text-muted);
    font-size: 11px;
}

/* ─── Color Palette Dropdown ───────────────────────────────── */

.cp-group {
    border-bottom: 1px solid var(--border);
}

.cp-group:last-child {
    border-bottom: none;
}

.cp-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 16px;
    font-size: 13px;
    cursor: pointer;
    transition: background var(--transition);
}

.cp-header:hover {
    background: var(--bg-card-hover);
}

.cp-filter-btn {
    background: none;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 2px 6px;
    cursor: pointer;
    font-size: 14px;
    opacity: 0.5;
    transition: all var(--transition);
}

.cp-filter-btn:hover {
    opacity: 1;
    border-color: var(--accent);
    background: var(--accent-glow);
}

.cp-toggle {
    color: var(--text-muted);
    font-size: 10px;
    transition: transform 0.2s ease;
    flex-shrink: 0;
}

.cp-group:not(.collapsed) .cp-toggle {
    transform: rotate(90deg);
}

.cp-paths {
    max-height: 300px;
    overflow-y: auto;
    background: var(--bg-input);
    border-top: 1px solid var(--border);
}

.cp-group.collapsed .cp-paths {
    display: none;
}

.cp-path-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 5px 16px 5px 52px;
    font-size: 12px;
    cursor: pointer;
    transition: background var(--transition);
    border-bottom: 1px solid rgba(255,255,255,0.03);
}

.cp-path-item:hover {
    background: var(--bg-card-hover);
}

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

.cp-path-idx {
    font-family: 'SF Mono', 'Fira Code', monospace;
    color: var(--accent);
    font-weight: 600;
    font-size: 11px;
    min-width: 36px;
}

.cp-path-detail {
    color: var(--text-muted);
    font-size: 11px;
    flex: 1;
}

.cp-tag {
    font-size: 9px;
    padding: 1px 5px;
    border-radius: 4px;
    background: rgba(99, 102, 241, 0.15);
    color: var(--accent);
    font-weight: 600;
    white-space: nowrap;
}

/* ─── Loading ───────────────────────────────────────────────── */

.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 15, 19, 0.85);
    backdrop-filter: blur(8px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    z-index: 1000;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ─── Highlighted path ──────────────────────────────────────── */

.svg-canvas path.highlight {
    stroke: var(--error) !important;
    stroke-width: 3px !important;
    fill-opacity: 0.5 !important;
    animation: pulse-path 1s ease-in-out infinite;
}

@keyframes pulse-path {
    0%, 100% { stroke-opacity: 1; }
    50% { stroke-opacity: 0.3; }
}

/* ─── Number labels overlay ─────────────────────────────────── */

.label-text {
    font-family: 'Inter', sans-serif;
    font-weight: 700;
    fill: #000;
    text-anchor: middle;
    dominant-baseline: central;
    pointer-events: none;
}

/* ─── Responsive ────────────────────────────────────────────── */

@media (max-width: 1024px) {
    .panel-grid {
        grid-template-columns: 1fr;
    }
}

/* ─── Scrollbar ─────────────────────────────────────────────── */

::-webkit-scrollbar {
    width: 6px;
}

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

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

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

/* ─── Bundle Convert (vector_zip → SVG) ─────────────────────── */

.bundle-area {
    margin-top: 24px;
}
.bundle-area p code {
    background: var(--bg-tertiary, rgba(0,0,0,0.05));
    padding: 1px 6px;
    border-radius: 4px;
    font-size: 12px;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}
.bundle-buttons {
    display: flex;
    gap: 8px;
    justify-content: center;
    flex-wrap: wrap;
}
.bundle-status {
    min-height: 22px;
    margin-top: 16px;
    font-size: 14px;
    color: var(--text-secondary);
    text-align: center;
}
.bundle-status.ok  { color: #16a34a; }
.bundle-status.err { color: #dc2626; }
.bundle-status.busy { color: var(--accent, #6366f1); }
.bundle-status.busy::after {
    content: '';
    display: inline-block;
    width: 10px;
    height: 10px;
    margin-left: 8px;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    vertical-align: -1px;
    animation: bundle-spin 0.7s linear infinite;
}
@keyframes bundle-spin { to { transform: rotate(360deg); } }

/* ─── de.json options on upload ──────────────────────────── */
.de-options {
    margin-top: 16px;
    font-size: 13px;
    color: var(--text-secondary);
}
.de-options label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.de-options select {
    padding: 4px 8px;
    border: 1px solid var(--border, #d1d5db);
    border-radius: 6px;
    background: var(--bg-secondary, #fff);
    font-size: 13px;
}