:root {
    --primary: #6C5CE7;
    --primary-dim: rgba(108, 92, 231, 0.15);
    --secondary: #A29BFE;
    --secondary-dim: rgba(162, 155, 254, 0.15);
    --accent: #FD79A8;
    --accent-dim: rgba(253, 121, 168, 0.15);
    --success: #00B894;
    --success-dim: rgba(0, 184, 148, 0.15);
    --danger: #E17055;
    --danger-dim: rgba(225, 112, 85, 0.15);
    --warning: #FDCB6E;

    --bg-primary: #130F1E;
    --bg-secondary: #1A1429;
    --bg-elevated: #221A35;
    --bg-card: rgba(34, 26, 53, 0.7);
    --bg-input: rgba(19, 15, 30, 0.9);

    --text-primary: #EDE8FC;
    --text-secondary: #9B91C9;
    --text-muted: #554D73;

    --border: rgba(155, 145, 201, 0.1);
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;

    --glass-bg: rgba(34, 26, 53, 0.6);
    --glass-border: rgba(155, 145, 201, 0.08);
    --glass-blur: 16px;
    --shadow-glow: 0 0 20px rgba(108, 92, 231, 0.2);

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

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

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 10%, rgba(108, 92, 231, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 90%, rgba(253, 121, 168, 0.05) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

.app-container {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.app-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(19, 15, 30, 0.9);
    backdrop-filter: blur(var(--glass-blur));
    border-bottom: 1px solid var(--border);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 10px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

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

.logo-icon {
    font-size: 1.5rem;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-dim);
    border-radius: var(--border-radius-sm);
    border: 1px solid rgba(108, 92, 231, 0.2);
}

.app-title {
    font-size: 1.125rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.app-subtitle {
    font-size: 0.65rem;
    color: var(--text-secondary);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 8px 14px;
    border: none;
    border-radius: var(--border-radius-sm);
    font-family: var(--font-sans);
    font-size: 0.8125rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), #5A4BD6);
    color: #fff;
    box-shadow: 0 2px 12px rgba(108, 92, 231, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 4px 18px rgba(108, 92, 231, 0.5);
    transform: translateY(-1px);
}

.btn-accent {
    background: linear-gradient(135deg, var(--accent), #E84393);
    color: #fff;
}

.btn-accent:hover {
    box-shadow: 0 4px 16px rgba(253, 121, 168, 0.4);
    transform: translateY(-1px);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.btn-ghost:hover {
    background: var(--bg-elevated);
    color: var(--text-primary);
}

.main-content {
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

/* Config */
.config-panel {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    padding: 18px;
}

.config-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
    margin-bottom: 14px;
}

.config-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
    position: relative;
}

.config-label {
    font-size: 0.6875rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.config-input {
    padding: 8px 10px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.8125rem;
    outline: none;
}

.config-input:focus {
    border-color: var(--primary);
}

.config-unit {
    font-size: 0.625rem;
    color: var(--text-muted);
    position: absolute;
    right: 10px;
    bottom: 10px;
}

.config-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

/* Stats */
.stats-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.stat-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    padding: 16px;
    text-align: center;
    transition: all var(--transition-base);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.stat-value {
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.6875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.stat-bar {
    height: 4px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 2px;
    margin-top: 8px;
    overflow: hidden;
}

.stat-bar-fill {
    height: 100%;
    border-radius: 2px;
    transition: width 0.3s ease;
    width: 0%;
}

.accepted-bar {
    background: linear-gradient(90deg, var(--success), #00D2A0);
}

.rejected-bar {
    background: linear-gradient(90deg, var(--danger), var(--accent));
}

/* Viz & Graph */
.viz-panel,
.graph-panel,
.comparison-panel,
.code-panel {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    padding: 18px;
}

.section-title {
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 6px;
}

canvas {
    width: 100%;
    border-radius: var(--border-radius-sm);
    background: rgba(0, 0, 0, 0.2);
}

/* Compare */
.compare-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.compare-card {
    background: rgba(0, 0, 0, 0.15);
    border-radius: var(--border-radius);
    padding: 14px;
    border: 1px solid transparent;
    transition: all var(--transition-base);
    cursor: pointer;
}

.compare-card:hover {
    border-color: rgba(108, 92, 231, 0.3);
}

.compare-card.active {
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.compare-name {
    font-size: 0.8125rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.compare-desc {
    font-size: 0.6875rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.compare-pros {
    font-size: 0.625rem;
    color: var(--success);
    margin-top: 6px;
}

.compare-cons {
    font-size: 0.625rem;
    color: var(--accent);
}

/* Code */
.code-block {
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--border-radius-sm);
    padding: 16px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--secondary);
    line-height: 1.6;
    overflow-x: auto;
    white-space: pre;
}

.app-footer {
    text-align: center;
    padding: 14px;
    font-size: 0.7rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border);
}

@media (max-width: 768px) {
    .config-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stats-cards {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

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

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

::-webkit-scrollbar-thumb {
    background: rgba(155, 145, 201, 0.2);
    border-radius: 3px;
}

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

::selection {
    background: rgba(108, 92, 231, 0.3);
}