/* =========================================================
   RAG IT/OT — Shared Light Theme
   No framework / no Bootstrap
   ========================================================= */

:root {
    --bg: #f5f7fb;
    --bg-soft: #eef2f7;
    --surface: #ffffff;
    --surface-soft: #f8fafc;
    --border: #e2e8f0;
    --border-strong: #cbd5e1;

    --text: #172033;
    --text-soft: #475569;
    --muted: #64748b;

    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-soft: #eff6ff;

    --success: #16a34a;
    --success-soft: #f0fdf4;

    --danger: #dc2626;
    --danger-soft: #fef2f2;

    --warning: #d97706;
    --warning-soft: #fffbeb;

    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 16px;

    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
    --shadow: 0 8px 24px rgba(15, 23, 42, 0.07);
    --shadow-hover: 0 12px 30px rgba(15, 23, 42, 0.10);

    --transition: 160ms ease;
}

* {
    box-sizing: border-box;
}

html {
    min-height: 100%;
    background: var(--bg);
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    margin: 0;
    background:
        radial-gradient(
            circle at top right,
            rgba(37, 99, 235, 0.06),
            transparent 32rem
        ),
        var(--bg);

    color: var(--text);

    font-family:
        Inter,
        ui-sans-serif,
        system-ui,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;

    font-size: 15px;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

button,
input,
select,
textarea {
    font: inherit;
}

button {
    -webkit-tap-highlight-color: transparent;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--primary-hover);
}

::selection {
    background: rgba(37, 99, 235, 0.16);
    color: var(--text);
}

:focus-visible {
    outline: 3px solid rgba(37, 99, 235, 0.20);
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}