/* ── base.css ── Design tokens, reset, typography ── */

/* ── Fonts ── */
@font-face {
    font-family: 'Inter';
    src: url('../fonts/Inter-Regular.woff2') format('woff2');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'Inter';
    src: url('../fonts/Inter-Medium.woff2') format('woff2');
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'Inter';
    src: url('../fonts/Inter-SemiBold.woff2') format('woff2');
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'Inter';
    src: url('../fonts/Inter-Bold.woff2') format('woff2');
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

/* ── Design Tokens ── */
:root {
    /* Surfaces */
    --color-bg:           #FFFFFF;
    --color-surface:      #F8F9FA;
    --color-border:       #E2E8F0;

    /* Text */
    --color-text:         #1A202C;
    --color-text-secondary: #475569;
    --color-text-muted:   #64748B;
    --color-text-faint:   #94A3B8;

    /* Accent */
    --color-accent:       #0891B2;
    --color-accent-hover: #0E7490;
    --color-accent-light: #ECFEFF;
    --color-action:       #6366F1;
    --color-action-hover: #4F46E5;
    --color-action-light: #EEF2FF;

    /* Status */
    --color-success:      #059669;
    --color-success-light:#ECFDF5;
    --color-warning:      #D97706;
    --color-warning-light:#FFFBEB;
    --color-error:        #DC2626;
    --color-error-light:  #FEF2F2;

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

    /* Font sizes */
    --text-xs:    11px;
    --text-sm:    13px;
    --text-base:  14px;
    --text-lg:    16px;
    --text-xl:    20px;
    --text-2xl:   24px;

    /* Spacing */
    --space-xs:   4px;
    --space-sm:   8px;
    --space-md:   16px;
    --space-lg:   24px;
    --space-xl:   32px;
    --space-2xl:  48px;

    /* Borders */
    --radius:     0px;
    --border:     1px solid var(--color-border);
}

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

html {
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: 1.5;
    color: var(--color-text);
    background: var(--color-bg);
}

/* ── Typography ── */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-text);
}

h1 { font-size: var(--text-2xl); }
h2 { font-size: var(--text-xl); }
h3 { font-size: var(--text-lg); }
h4 { font-size: var(--text-base); font-weight: 500; }

p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

a {
    color: var(--color-accent);
    text-decoration: none;
}
a:hover {
    color: var(--color-accent-hover);
    text-decoration: underline;
}

code, pre {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
}

pre {
    background: var(--color-surface);
    border: var(--border);
    padding: var(--space-md);
    overflow-x: auto;
}

/* ── Selection ── */
::selection {
    background: var(--color-accent);
    color: white;
}

/* ── Focus ── */
:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* ── Scrollbar ── */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: var(--color-border);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-faint);
}

/* ── Lists ── */
ul, ol {
    list-style: none;
}

/* ── Tables ── */
table {
    border-collapse: collapse;
    width: 100%;
}
th, td {
    text-align: left;
    padding: var(--space-sm) var(--space-md);
    border-bottom: var(--border);
}
th {
    font-weight: 600;
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

/* ── Utility ── */
.muted {
    color: var(--color-text-muted);
    font-size: var(--text-sm);
}
.faint {
    color: var(--color-text-faint);
}
.mono {
    font-family: var(--font-mono);
}
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}