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

:root {
    --primary-color: #4CAF50;
    --primary-hover: #5cb860;
    --primary-contrast: #ffffff;
    --danger-color: #f44336;
    --warning-color: #ff9800;
    --info-color: #2196F3;
    --font-mono: 'Cascadia Code', 'Fira Code', 'JetBrains Mono', 'SF Mono', 'Consolas', 'Liberation Mono', monospace;
}

/* ── SVG icon base ── */
.icon {
    display: inline-block;
    width: 1em;
    height: 1em;
    vertical-align: -0.125em;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    flex-shrink: 0;
}

/* Dark theme (default) */
[data-theme="dark"] {
    --bg-color: #1a1a1a;
    --bg-secondary: #242424;
    --card-bg: #2d2d2d;
    --text-color: #e0e0e0;
    --text-secondary: #999;
    --text-muted: #777;
    --border-color: #404040;
    --display-badge-bg: rgba(0, 0, 0, 0.4);
    --primary-text-color: #66bb6a;
    --success-color: #28a745;
    --shadow-color: rgba(0, 0, 0, 0.3);
    color-scheme: dark;
}

/* Light theme */
[data-theme="light"] {
    --bg-color: #f5f5f5;
    --bg-secondary: #eee;
    --card-bg: #ffffff;
    --text-color: #333333;
    --text-secondary: #666;
    --text-muted: #999;
    --border-color: #e0e0e0;
    --display-badge-bg: rgba(255, 255, 255, 0.85);
    --primary-text-color: #3d8b40;
    --success-color: #2e7d32;
    --shadow-color: rgba(0, 0, 0, 0.12);
    color-scheme: light;
}

/* Default to dark theme */
body {
    background: var(--bg-color);
    color: var(--text-color);
}

html {
    background: var(--bg-color);
    overflow-y: scroll;
}

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

body.modal-open {
    position: fixed;
    width: 100%;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* ── Smooth theme transitions ── */
body,
.card,
.template-card,
.modal-content,
.dashboard-target,
.perf-chart-card,
header {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

/* ── Respect reduced motion preference ── */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}