/* ═══════════════════════════════════════════════════════════
   CWR 2.1 Visualizer — Styles
   Mobile-first, dark theme, glassmorphism accents
   ═══════════════════════════════════════════════════════════ */

/* ── CSS Custom Properties ──────────────────────────────── */
:root {
    /* Base palette */
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #1c2333;
    --bg-elevated: #21262d;

    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --text-inverse: #0d1117;

    --border-default: #30363d;
    --border-muted: #21262d;

    /* Accent */
    --accent: #58a6ff;
    --accent-hover: #79c0ff;
    --accent-subtle: rgba(88, 166, 255, 0.15);

    /* Category colors — vivid but not harsh */
    --cat-control:    hsl(173, 70%, 48%);
    --cat-work:       hsl(215, 80%, 62%);
    --cat-agreement:  hsl(280, 60%, 60%);
    --cat-ack:        hsl(330, 65%, 55%);
    --cat-publisher:  hsl(260, 70%, 65%);
    --cat-writer:     hsl(40, 85%, 55%);
    --cat-title:      hsl(190, 70%, 55%);
    --cat-detail:     hsl(340, 60%, 60%);
    --cat-message:    hsl(0, 70%, 60%);
    --cat-territory:  hsl(140, 55%, 50%);
    --cat-party:      hsl(25, 75%, 60%);
    --cat-info:       hsl(200, 50%, 55%);
    --cat-nonroman:   hsl(60, 50%, 55%);
    --cat-unknown:    hsl(0, 0%, 50%);

    /* Semi-transparent backgrounds for fields */
    --cat-control-bg:    hsla(173, 70%, 48%, 0.08);
    --cat-work-bg:       hsla(215, 80%, 62%, 0.08);
    --cat-agreement-bg:  hsla(280, 60%, 60%, 0.08);
    --cat-ack-bg:        hsla(330, 65%, 55%, 0.08);
    --cat-publisher-bg:  hsla(260, 70%, 65%, 0.08);
    --cat-writer-bg:     hsla(40, 85%, 55%, 0.08);
    --cat-title-bg:      hsla(190, 70%, 55%, 0.08);
    --cat-detail-bg:     hsla(340, 60%, 60%, 0.08);
    --cat-message-bg:    hsla(0, 70%, 60%, 0.08);
    --cat-territory-bg:  hsla(140, 55%, 50%, 0.08);
    --cat-party-bg:      hsla(25, 75%, 60%, 0.08);
    --cat-info-bg:       hsla(200, 50%, 55%, 0.08);
    --cat-nonroman-bg:   hsla(60, 50%, 55%, 0.08);
    --cat-unknown-bg:    hsla(0, 0%, 50%, 0.08);

    /* Status */
    --success: #3fb950;
    --warning: #d29922;
    --error:   #f85149;

    /* Typography */
    --font-sans: 'Inter', 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'SF Mono', Consolas, monospace;

    /* Spacing scale */
    --sp-1: 4px;
    --sp-2: 8px;
    --sp-3: 12px;
    --sp-4: 16px;
    --sp-5: 20px;
    --sp-6: 24px;
    --sp-8: 32px;
    --sp-10: 40px;

    /* Radii */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(88, 166, 255, 0.15);

    /* Glass */
    --glass-bg: rgba(22, 27, 34, 0.85);
    --glass-border: rgba(255, 255, 255, 0.06);
    --glass-blur: blur(16px);
}

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

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

/* ── Background decoration ──────────────────────────────── */
body::before {
    content: '';
    position: fixed;
    top: -30%;
    right: -20%;
    width: 60%;
    height: 60%;
    background: radial-gradient(circle, hsla(215, 80%, 62%, 0.06) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

body::after {
    content: '';
    position: fixed;
    bottom: -20%;
    left: -15%;
    width: 50%;
    height: 50%;
    background: radial-gradient(circle, hsla(173, 70%, 48%, 0.04) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

/* ── Layout ─────────────────────────────────────────────── */
.cwr-app {
    position: relative;
    z-index: 1;
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--sp-4);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ── Header ─────────────────────────────────────────────── */
.cwr-header {
    text-align: center;
    padding: var(--sp-8) 0 var(--sp-6);
    position: relative;
}

.cwr-logo {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-3);
    margin-bottom: var(--sp-2);
}

.cwr-logo-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--cat-control), var(--cat-work));
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-glow);
}

.cwr-logo-icon svg {
    width: 24px;
    height: 24px;
    fill: white;
}

.cwr-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--text-primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cwr-header p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: var(--sp-1);
}

/* ── Input Section ──────────────────────────────────────── */
.cwr-input-section {
    display: flex;
    flex-direction: column;
    gap: var(--sp-4);
    margin-bottom: var(--sp-6);
}

.cwr-textarea-wrap {
    position: relative;
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
    overflow: hidden;
    transition: border-color var(--transition-fast);
}

.cwr-textarea-wrap:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-subtle);
}

.cwr-textarea-label {
    display: block;
    padding: var(--sp-2) var(--sp-3) 0;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
}

#cwr-input {
    width: 100%;
    min-height: 180px;
    max-height: 400px;
    padding: var(--sp-2) var(--sp-3) var(--sp-3);
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.82rem;
    line-height: 1.5;
    resize: vertical;
    outline: none;
}

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

/* Drop zone */
.cwr-drop-zone {
    border: 2px dashed var(--border-default);
    border-radius: var(--radius-md);
    padding: var(--sp-6) var(--sp-4);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    background: var(--bg-secondary);
}

.cwr-drop-zone:hover {
    border-color: var(--accent);
    background: var(--accent-subtle);
}

.cwr-drop-active {
    border-color: var(--accent) !important;
    background: var(--accent-subtle) !important;
    box-shadow: var(--shadow-glow);
}

.cwr-drop-icon {
    width: 40px;
    height: 40px;
    margin: 0 auto var(--sp-2);
    opacity: 0.5;
}

.cwr-drop-icon svg {
    width: 100%;
    height: 100%;
    fill: var(--text-secondary);
}

.cwr-drop-zone p {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.cwr-drop-zone .cwr-drop-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--sp-1);
}

#cwr-file-name {
    display: none;
    margin-top: var(--sp-2);
    padding: var(--sp-1) var(--sp-2);
    background: var(--accent-subtle);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    color: var(--accent);
    font-family: var(--font-mono);
}

/* Action buttons */
.cwr-actions {
    display: flex;
    gap: var(--sp-2);
    flex-wrap: wrap;
}

.cwr-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-2);
    padding: var(--sp-2) var(--sp-4);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-sm);
    background: var(--bg-elevated);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    min-height: 40px;
}

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

.cwr-btn:active {
    transform: scale(0.97);
}

.cwr-btn svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
    flex-shrink: 0;
}

.cwr-btn-primary {
    background: linear-gradient(135deg, hsl(215, 80%, 52%), hsl(215, 80%, 45%));
    border-color: hsl(215, 80%, 40%);
    color: white;
    font-weight: 600;
}

.cwr-btn-primary:hover {
    background: linear-gradient(135deg, hsl(215, 80%, 58%), hsl(215, 80%, 50%));
    border-color: hsl(215, 80%, 50%);
}

.cwr-btn-sample {
    border-color: var(--cat-control);
    color: var(--cat-control);
}

.cwr-btn-sample:hover {
    background: hsla(173, 70%, 48%, 0.1);
}

/* ── Welcome Screen ─────────────────────────────────────── */
#cwr-welcome {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--sp-10) var(--sp-4);
    text-align: center;
    flex: 1;
}

#cwr-welcome .cwr-welcome-icon {
    width: 64px;
    height: 64px;
    margin-bottom: var(--sp-4);
    opacity: 0.3;
}

#cwr-welcome .cwr-welcome-icon svg {
    width: 100%;
    height: 100%;
    fill: var(--text-muted);
}

#cwr-welcome h2 {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--sp-2);
}

#cwr-welcome p {
    font-size: 0.9rem;
    color: var(--text-muted);
    max-width: 400px;
}

/* ── Results Screen ─────────────────────────────────────── */
#cwr-results {
    display: none;
    flex-direction: column;
    flex: 1;
}

/* ── Stats Bar ──────────────────────────────────────────── */
#cwr-stats {
    display: flex;
    gap: var(--sp-3);
    padding: var(--sp-3) 0;
    margin-bottom: var(--sp-3);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.cwr-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 80px;
    padding: var(--sp-2) var(--sp-3);
    background: var(--bg-secondary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.cwr-stat-value {
    font-size: 1.25rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--text-primary);
}

.cwr-stat-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-top: 2px;
}

.cwr-stat-ok .cwr-stat-value {
    color: var(--success);
}

.cwr-stat-error .cwr-stat-value {
    color: var(--error);
}

#cwr-perf {
    font-size: 0.72rem;
    color: var(--text-muted);
    text-align: right;
    margin-bottom: var(--sp-2);
    font-family: var(--font-mono);
}

/* ── Output Viewer ──────────────────────────────────────── */
#cwr-output {
    flex: 1;
    background: var(--bg-secondary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    overflow: auto;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    line-height: 1.65;
    -webkit-overflow-scrolling: touch;
    min-height: 200px;
}

.cwr-empty {
    padding: var(--sp-8);
    text-align: center;
    color: var(--text-muted);
}

/* ── Record Line ────────────────────────────────────────── */
.cwr-line {
    display: flex;
    align-items: flex-start;
    padding: 2px var(--sp-2);
    border-bottom: 1px solid var(--border-muted);
    transition: background var(--transition-fast);
    white-space: nowrap;
}

.cwr-line:hover {
    background: rgba(255, 255, 255, 0.02);
}

.cwr-line-has-error {
    background: rgba(248, 81, 73, 0.04);
}

.cwr-line-has-error:hover {
    background: rgba(248, 81, 73, 0.08);
}

.cwr-line-highlight {
    animation: line-flash 2s ease;
}

@keyframes line-flash {
    0% { background: rgba(88, 166, 255, 0.2); }
    100% { background: transparent; }
}

/* Line number gutter */
.cwr-gutter {
    flex-shrink: 0;
    width: 40px;
    text-align: right;
    color: var(--text-muted);
    padding-right: var(--sp-2);
    user-select: none;
    font-size: 0.72rem;
    opacity: 0.6;
}

/* Record type badge */
.cwr-badge {
    flex-shrink: 0;
    display: inline-block;
    min-width: 32px;
    text-align: center;
    padding: 0 var(--sp-1);
    margin-right: var(--sp-2);
    border-radius: 3px;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    user-select: none;
}

.cwr-badge-control      { background: hsla(173, 70%, 48%, 0.18); color: var(--cat-control); }
.cwr-badge-work          { background: hsla(215, 80%, 62%, 0.18); color: var(--cat-work); }
.cwr-badge-agreement     { background: hsla(280, 60%, 60%, 0.18); color: var(--cat-agreement); }
.cwr-badge-acknowledgement { background: hsla(330, 65%, 55%, 0.18); color: var(--cat-ack); }
.cwr-badge-publisher     { background: hsla(260, 70%, 65%, 0.18); color: var(--cat-publisher); }
.cwr-badge-writer        { background: hsla(40, 85%, 55%, 0.18); color: var(--cat-writer); }
.cwr-badge-title         { background: hsla(190, 70%, 55%, 0.18); color: var(--cat-title); }
.cwr-badge-detail        { background: hsla(340, 60%, 60%, 0.18); color: var(--cat-detail); }
.cwr-badge-message       { background: hsla(0, 70%, 60%, 0.18); color: var(--cat-message); }
.cwr-badge-territory     { background: hsla(140, 55%, 50%, 0.18); color: var(--cat-territory); }
.cwr-badge-party         { background: hsla(25, 75%, 60%, 0.18); color: var(--cat-party); }
.cwr-badge-info          { background: hsla(200, 50%, 55%, 0.18); color: var(--cat-info); }
.cwr-badge-nonroman      { background: hsla(60, 50%, 55%, 0.18); color: var(--cat-nonroman); }
.cwr-badge-unknown       { background: hsla(0, 0%, 50%, 0.18); color: var(--cat-unknown); }

/* Fields container */
.cwr-fields {
    display: inline;
    word-break: break-all;
    white-space: pre;
}

/* Individual field */
.cwr-field {
    cursor: pointer;
    border-bottom: 1px solid transparent;
    transition: all var(--transition-fast);
    position: relative;
}

.cwr-field:hover {
    border-bottom-color: var(--accent);
    background: var(--accent-subtle);
}

/* Category line background tints */
.cwr-cat-control    { background: var(--cat-control-bg); }
.cwr-cat-work       { background: var(--cat-work-bg); }
.cwr-cat-agreement  { background: var(--cat-agreement-bg); }
.cwr-cat-acknowledgement { background: var(--cat-ack-bg); }
.cwr-cat-publisher  { background: var(--cat-publisher-bg); }
.cwr-cat-writer     { background: var(--cat-writer-bg); }
.cwr-cat-title      { background: var(--cat-title-bg); }
.cwr-cat-detail     { background: var(--cat-detail-bg); }
.cwr-cat-message    { background: var(--cat-message-bg); }
.cwr-cat-territory  { background: var(--cat-territory-bg); }
.cwr-cat-party      { background: var(--cat-party-bg); }
.cwr-cat-info       { background: var(--cat-info-bg); }
.cwr-cat-nonroman   { background: var(--cat-nonroman-bg); }
.cwr-cat-unknown    { background: var(--cat-unknown-bg); }

/* Field with error */
.cwr-field-error {
    background: rgba(248, 81, 73, 0.12);
    border-bottom: 2px wavy var(--error);
}

.cwr-field-unknown {
    color: var(--text-muted);
    font-style: italic;
}

/* Error indicator at end of line */
.cwr-error-indicator {
    flex-shrink: 0;
    margin-left: auto;
    padding-left: var(--sp-2);
    color: var(--error);
    font-size: 0.72rem;
    font-weight: 600;
    user-select: none;
    cursor: default;
}

/* ── Tooltip ────────────────────────────────────────────── */
.cwr-tooltip {
    position: absolute;
    z-index: 10000;
    max-width: 360px;
    min-width: 240px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    font-family: var(--font-sans);
    font-size: 0.82rem;
    overflow: hidden;
    animation: tooltip-in 150ms ease forwards;
    pointer-events: none;
}

@keyframes tooltip-in {
    from { opacity: 0; transform: translateY(4px); }
    to   { opacity: 1; transform: translateY(0); }
}

.cwr-tooltip-header {
    display: flex;
    align-items: center;
    gap: var(--sp-2);
    padding: var(--sp-2) var(--sp-3);
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--border-muted);
}

.cwr-tooltip-header strong {
    font-size: 0.85rem;
}

.cwr-tooltip-badge {
    font-size: 0.65rem;
    padding: 1px 5px;
    border-radius: 3px;
    font-weight: 700;
}

.cwr-tooltip-body {
    padding: var(--sp-2) var(--sp-3) var(--sp-3);
}

.cwr-tooltip-row {
    display: flex;
    justify-content: space-between;
    padding: 2px 0;
}

.cwr-tooltip-label {
    color: var(--text-muted);
    font-size: 0.78rem;
}

.cwr-tooltip-value {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.78rem;
}

.cwr-tooltip-mono {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    max-width: 180px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.cwr-tooltip-desc {
    margin-top: var(--sp-2);
    padding-top: var(--sp-2);
    border-top: 1px solid var(--border-muted);
    color: var(--text-secondary);
    font-size: 0.78rem;
    line-height: 1.4;
}

.cwr-tooltip-error {
    margin-top: var(--sp-2);
    padding: var(--sp-1) var(--sp-2);
    background: rgba(248, 81, 73, 0.12);
    border-radius: var(--radius-sm);
    color: var(--error);
    font-size: 0.78rem;
    font-weight: 500;
}

/* Required field color badges */
.cwr-req-m { color: var(--error); font-weight: 600; }
.cwr-req-c { color: var(--warning); }
.cwr-req-o { color: var(--text-muted); }

/* ── Error Panel ────────────────────────────────────────── */
#cwr-error-panel {
    margin-top: var(--sp-4);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
    overflow: hidden;
}

.cwr-error-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
}

#cwr-error-toggle {
    display: flex;
    align-items: center;
    gap: var(--sp-2);
    flex: 1;
    min-width: 200px;
    padding: var(--sp-3) var(--sp-4);
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition-fast);
    touch-action: manipulation;
    text-align: left;
}

#cwr-error-toggle:hover {
    background: rgba(255, 255, 255, 0.03);
}

.cwr-error-filters {
    display: flex;
    gap: var(--sp-2);
    padding: 0 var(--sp-4) var(--sp-3);
    align-items: center;
}

@media (min-width: 600px) {
    .cwr-error-filters {
        padding: var(--sp-3) var(--sp-4);
        margin-left: auto;
    }
}

.cwr-filter-btn {
    background: transparent;
    border: 1px solid var(--border-default);
    color: var(--text-secondary);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.cwr-filter-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.cwr-filter-btn.active {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border-color: var(--text-muted);
}

.cwr-filter-btn[data-filter="error"].active {
    color: var(--error);
    border-color: var(--error);
    background: rgba(248, 81, 73, 0.1);
}

.cwr-filter-btn[data-filter="warning"].active {
    color: var(--warning);
    border-color: var(--warning);
    background: rgba(210, 153, 34, 0.1);
}

.cwr-filter-btn[data-filter="info"].active {
    color: var(--accent);
    border-color: var(--accent);
    background: rgba(88, 166, 255, 0.1);
}

/* Filtering logic */
.cwr-error-content-filter-error .cwr-error-item:not(.cwr-error-error) { display: none !important; }
.cwr-error-content-filter-warning .cwr-error-item:not(.cwr-error-warning) { display: none !important; }
.cwr-error-content-filter-info .cwr-error-item:not(.cwr-error-info) { display: none !important; }

#cwr-error-toggle svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
    transition: transform var(--transition-normal);
}

.cwr-error-panel-open #cwr-error-toggle svg {
    transform: rotate(90deg);
}

.cwr-error-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    height: 22px;
    padding: 0 6px;
    border-radius: var(--radius-full);
    background: var(--bg-elevated);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--text-muted);
}

.cwr-error-badge-active {
    background: rgba(248, 81, 73, 0.15);
    color: var(--error);
}

#cwr-error-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
}

.cwr-error-panel-open #cwr-error-content {
    max-height: 400px;
    overflow-y: auto;
}

.cwr-no-errors {
    padding: var(--sp-4);
    text-align: center;
    color: var(--success);
    font-weight: 500;
}

.cwr-error-list {
    padding: var(--sp-2);
}

.cwr-error-item {
    display: flex;
    align-items: flex-start;
    gap: var(--sp-2);
    padding: var(--sp-2) var(--sp-3);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background var(--transition-fast);
    font-size: 0.82rem;
}

.cwr-error-item:hover {
    background: rgba(255, 255, 255, 0.03);
}

.cwr-error-icon {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.72rem;
    font-weight: 700;
    border-radius: var(--radius-full);
}

.cwr-error-error .cwr-error-icon {
    background: rgba(248, 81, 73, 0.15);
    color: var(--error);
}

.cwr-error-warning .cwr-error-icon {
    background: rgba(210, 153, 34, 0.15);
    color: var(--warning);
}

.cwr-error-info .cwr-error-icon {
    background: rgba(88, 166, 255, 0.15);
    color: var(--accent);
}

.cwr-error-line {
    flex-shrink: 0;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    min-width: 55px;
}

.cwr-error-type {
    flex-shrink: 0;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--text-secondary);
    min-width: 30px;
}

.cwr-error-msg {
    color: var(--text-secondary);
    line-height: 1.4;
}

/* ── Notifications ──────────────────────────────────────── */
.cwr-notification {
    position: fixed;
    bottom: var(--sp-6);
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    padding: var(--sp-3) var(--sp-5);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 500;
    z-index: 20000;
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-normal);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
}

.cwr-notification-show {
    transform: translateX(-50%) translateY(0);
}

.cwr-notification-success {
    background: rgba(63, 185, 80, 0.9);
    color: white;
}

.cwr-notification-warning {
    background: rgba(210, 153, 34, 0.9);
    color: white;
}

.cwr-notification-error {
    background: rgba(248, 81, 73, 0.9);
    color: white;
}

/* ── Footer ─────────────────────────────────────────────── */
.cwr-footer {
    text-align: center;
    padding: var(--sp-6) 0 var(--sp-4);
    color: var(--text-muted);
    font-size: 0.75rem;
}

.cwr-footer a {
    color: var(--accent);
    text-decoration: none;
}

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

/* ── Hidden utility ─────────────────────────────────────── */
.cwr-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* ── File input hidden ──────────────────────────────────── */
#cwr-file-input {
    display: none;
}

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE — Mobile-first breakpoints
   ═══════════════════════════════════════════════════════════ */

/* Small mobile (< 480px) */
@media (max-width: 479px) {
    .cwr-app {
        padding: var(--sp-2);
    }

    .cwr-header h1 {
        font-size: 1.3rem;
    }

    .cwr-header p {
        font-size: 0.8rem;
    }

    .cwr-actions {
        flex-direction: column;
    }

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

    #cwr-output {
        font-size: 0.68rem;
    }

    .cwr-gutter {
        width: 30px;
        font-size: 0.65rem;
    }

    .cwr-badge {
        font-size: 0.6rem;
        min-width: 26px;
    }

    .cwr-stat {
        min-width: 64px;
        padding: var(--sp-1) var(--sp-2);
    }

    .cwr-stat-value {
        font-size: 1rem;
    }

    .cwr-line {
        padding: 2px var(--sp-1);
    }
}

/* Tablet (480px – 768px) */
@media (min-width: 480px) and (max-width: 768px) {
    .cwr-actions {
        flex-wrap: wrap;
    }
}

/* Desktop (> 768px) */
@media (min-width: 769px) {
    .cwr-header h1 {
        font-size: 2rem;
    }

    .cwr-input-row {
        display: flex;
        gap: var(--sp-4);
    }

    .cwr-input-row > .cwr-textarea-wrap {
        flex: 2;
    }

    .cwr-input-row > .cwr-drop-zone {
        flex: 1;
    }

    #cwr-input {
        min-height: 200px;
    }

    #cwr-output {
        font-size: 0.82rem;
        max-height: 600px;
    }
}

/* Large desktop (> 1200px) */
@media (min-width: 1200px) {
    .cwr-app {
        padding: var(--sp-6) var(--sp-8);
    }
}

/* ── Print styles ───────────────────────────────────────── */
@media print {
    body { background: white; color: black; }
    .cwr-input-section, .cwr-actions, .cwr-header, .cwr-footer,
    #cwr-error-panel, .cwr-notification { display: none !important; }
    #cwr-output { border: 1px solid #ccc; }
    .cwr-line { border-bottom: 1px solid #eee; }
}