/*
 * Blueprint — technical drawing.
 *
 * Light-first: a near-achromatic drafting-paper field (whisper of cool at
 * hue 240, chroma ≤0.005 — the paper is calm gray; the BLUE lives in the ink
 * and the accent, never washed into the field) carrying pure-white cards,
 * with deep NAVY ink — the ink is navy, that is the signature. Hairline RULES are the organizing metaphor:
 * borders sit slightly more present than usual (ink at ~0.17 alpha) and
 * elevation stays minimal — surfaces separate by rule lines like a technical
 * drawing, not by shadow. One azure accent (hue ~232) owns primary, links, and
 * focus; the info status is pushed to violet (hue 285) so the two never read
 * as the same swatch.
 *
 * Dark mode is the iconic inversion: THE DARK MODE IS THE BLUEPRINT. A deep
 * drafting-blue field (low-chroma navy, hue 258 — unmistakably blue-leaning
 * but calm), near-white blue-tinted ink, cards stepping a full lightness step
 * above the field, and the azure accent turned luminous cyan with dark ink.
 *
 * Type is technical: Space Grotesk for headings (geometric, drafting-title),
 * Inter for body, JetBrains Mono for code. Dense/pro register — 0.9375rem
 * body, fixed rem sizes. Radius is a sharp 0.375rem; motion is precise
 * (120/220/320/450ms) with springs aliased to the standard eases. Tables get
 * tabular numerals — drafting tables demand aligned digits.
 *
 * Token contract matches lib-theme-caffe-florian/theme.css (Crema v1).
 */

/*
 * Fonts: consuming apps load Space Grotesk + Inter + JetBrains Mono at the top
 * of their entry CSS (where @import statements are allowed), via the Google
 * Fonts URL documented in this theme's README. Embedding the @import here — or
 * smuggling the URL in a comment for a build script to lift — breaks PostCSS's
 * ordering rules, so neither is done in this file.
 */

:root {
    --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-heading: "Space Grotesk", "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

    /* Tailwind utility families. Distinct names so a consuming app's
     * `@theme inline` can indirect to these (--font-heading/--font-sans collide
     * with Tailwind's own font-* namespace). Mirror --font-heading/--font-sans. */
    --heading-family: "Space Grotesk", "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
    --body-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

    /* ── Colors ── cool drafting-paper field, pure-white cards, deep navy ink,
     * one azure accent. Rules do the separating; shadow stays out of it. */
    --background: oklch(0.966 0.0035 240);
    --foreground: oklch(0.23 0.045 258);

    --card: oklch(1 0 0);
    --card-foreground: oklch(0.23 0.045 258);

    --popover: oklch(0.995 0.003 240);
    --popover-foreground: oklch(0.23 0.045 258);

    /* Primary — the azure of the drawing's live line (hue 232, L0.49), deep
     * enough to carry a near-white label at ~6:1. Spent on the primary action,
     * links, selection, and focus; nowhere else. */
    --primary: oklch(0.49 0.13 232);
    --primary-foreground: oklch(0.98 0.008 232);

    --secondary: oklch(0.93 0.005 240);
    --secondary-foreground: oklch(0.29 0.04 258);

    --muted: oklch(0.93 0.0045 240);
    --muted-foreground: oklch(0.45 0.03 255);

    /* Accent — hover/selection tint: a pale azure wash with deep azure ink,
     * not a second competing fill. */
    --accent: oklch(0.925 0.028 232);
    --accent-foreground: oklch(0.37 0.09 235);

    /* ── Status ── deep fills with light labels for red/violet, bright fills
     * with dark ink for green/amber. Info is pushed to VIOLET (hue 285) so it
     * can never be mistaken for the azure primary (hue 232). */
    --destructive: oklch(0.54 0.21 27);
    --destructive-foreground: oklch(0.98 0.01 27);
    --success: oklch(0.52 0.13 155);
    --success-foreground: oklch(0.98 0.01 155);
    --warning: oklch(0.76 0.15 78);
    --warning-foreground: oklch(0.24 0.05 78);
    --info: oklch(0.5 0.13 285);
    --info-foreground: oklch(0.98 0.01 285);

    /* Hairline rules — the theme's organizing metaphor. Navy ink at a slightly
     * higher alpha than house-usual so every rule reads on the paper. */
    --border: oklch(0.23 0.045 258 / 0.17);
    --input: oklch(0.23 0.045 258 / 0.2);
    --ring: oklch(0.49 0.13 232 / 0.6);

    /* Chart palette — azure lead, then spaced drafting-ink hues (violet, red,
     * amber, teal-green); hues ≥60° apart, adjacent lightness varied. */
    --chart-1: oklch(0.55 0.13 235);
    --chart-2: oklch(0.55 0.14 300);
    --chart-3: oklch(0.62 0.17 25);
    --chart-4: oklch(0.75 0.14 85);
    --chart-5: oklch(0.66 0.11 165);

    --sidebar: oklch(0.945 0.004 240);
    --sidebar-foreground: oklch(0.23 0.045 258);
    --sidebar-primary: oklch(0.49 0.13 232);
    --sidebar-primary-foreground: oklch(0.98 0.008 232);
    --sidebar-accent: oklch(0.925 0.028 232);
    --sidebar-accent-foreground: oklch(0.37 0.09 235);
    --sidebar-border: oklch(0.23 0.045 258 / 0.13);
    --sidebar-ring: oklch(0.49 0.13 232 / 0.6);

    /* Syntax — muted-precise: navy-family base with disciplined accents. */
    --syntax-keyword: oklch(0.44 0.12 285);
    --syntax-string: oklch(0.45 0.1 165);
    --syntax-number: oklch(0.48 0.11 60);
    --syntax-comment: oklch(0.55 0.02 250);
    --syntax-function: oklch(0.45 0.13 235);
    --syntax-type: oklch(0.45 0.09 200);

    /* ── Chat surfaces ──
     * Contract for lib-agent-chat-ui / lib-agent-dock-ui. User bubble is a
     * deep navy-ink panel with light text (the drawing's title block);
     * assistant bubble is a clean card with a hairline rule. */
    --chat-user-bg: oklch(0.28 0.05 258);
    --chat-user-fg: oklch(0.97 0.006 240);
    --chat-assistant-bg: oklch(1 0 0);
    --chat-assistant-fg: oklch(0.23 0.045 258);
    --chat-assistant-border: oklch(0.23 0.045 258 / 0.17);

    /* Sharp drafting radius. */
    --radius: 0.375rem;

    /* ── Motion ── precise, instrument-quick. Springs alias to the standard
     * eases — a drawing never bounces. */
    --duration-fast: 120ms;
    --duration-base: 220ms;
    --duration-slow: 320ms;
    --duration-slower: 450ms;
    --duration-spring: 220ms;

    --ease-standard: cubic-bezier(0.2, 0, 0, 1);
    --ease-decelerate: cubic-bezier(0, 0, 0, 1);
    --ease-accelerate: cubic-bezier(0.3, 0, 1, 1);
    --ease-emphasized: cubic-bezier(0.2, 0, 0, 1);

    --ease-spring-gentle: var(--ease-standard);
    --ease-spring-snappy: var(--ease-decelerate);
    --ease-spring-bouncy: var(--ease-standard);

    /* ── Typography ── dense/pro register, fixed rem, full role ramp. */
    --text-hero-size: 3rem;
    --text-hero-lh: 1.05;
    --text-display-size: 2.25rem;
    --text-display-lh: 1.1;
    --text-headline-size: 1.625rem;
    --text-headline-lh: 1.25;
    --text-title-size: 1.25rem;
    --text-title-lh: 1.35;
    --text-subtitle-size: 1.0625rem;
    --text-subtitle-lh: 1.45;
    --text-body-size: 0.9375rem;
    --text-body-lh: 1.5;
    --text-label-size: 0.8125rem;
    --text-label-lh: 1.125rem;
    --text-caption-size: 0.75rem;
    --text-caption-lh: 1.0625rem;

    /* ── Elevation ── minimal on purpose — rule lines do the separating.
     * Popovers and modals get just enough lift to read as floating. */
    --elevation-0: none;
    --elevation-1: 0 1px 1px oklch(0.23 0.045 258 / 0.04);
    --elevation-2: 0 1px 2px oklch(0.23 0.045 258 / 0.06);
    --elevation-3: 0 2px 6px -1px oklch(0.23 0.045 258 / 0.08), 0 1px 2px oklch(0.23 0.045 258 / 0.05);
    --elevation-4: 0 8px 16px -4px oklch(0.23 0.045 258 / 0.1), 0 2px 4px -2px oklch(0.23 0.045 258 / 0.06);
    --elevation-5: 0 16px 32px -8px oklch(0.23 0.045 258 / 0.14);

    --spacing: 0.25rem;

    --border-width-thin: 0.5px;
    --border-width-base: 1px;
    --border-width-thick: 2px;
    --border-width-heavy: 4px;

    /* No glass — inert values so consuming apps referencing these get no-ops. */
    --glass-blur: 0px;
    --glass-saturate: 100%;
    --glass-brightness: 1;
    --glass-contrast: 1;
}

/*
 * Dark mode — THE BLUEPRINT. Deep drafting-blue field (low-chroma navy,
 * hue 258 — blue-leaning but calm, never electric), near-white blue-tinted
 * ink, cards stepping a full lightness step above the field, and the accent
 * turned luminous cyan carrying dark ink.
 */
.dark {
    --background: oklch(0.21 0.035 258);
    --foreground: oklch(0.95 0.012 240);

    --card: oklch(0.26 0.035 258);
    --card-foreground: oklch(0.95 0.012 240);

    --popover: oklch(0.28 0.035 258);
    --popover-foreground: oklch(0.95 0.012 240);

    /* Primary — the luminous cyan line on the blueprint, dark navy ink on
     * top (bright-swatch/dark-ink pairing, ~9:1). */
    --primary: oklch(0.78 0.12 220);
    --primary-foreground: oklch(0.2 0.04 230);

    --secondary: oklch(0.3 0.035 258);
    --secondary-foreground: oklch(0.9 0.012 240);

    --muted: oklch(0.3 0.035 258);
    --muted-foreground: oklch(0.72 0.02 245);

    --accent: oklch(0.34 0.06 230);
    --accent-foreground: oklch(0.85 0.09 215);

    --destructive: oklch(0.55 0.2 27);
    --destructive-foreground: oklch(0.98 0.01 27);
    --success: oklch(0.72 0.14 155);
    --success-foreground: oklch(0.18 0.04 155);
    --warning: oklch(0.78 0.15 80);
    --warning-foreground: oklch(0.22 0.05 80);
    --info: oklch(0.7 0.12 285);
    --info-foreground: oklch(0.17 0.04 285);

    /* Rules invert: light ink hairlines on the blueprint field. */
    --border: oklch(0.95 0.012 240 / 0.15);
    --input: oklch(0.95 0.012 240 / 0.18);
    --ring: oklch(0.78 0.12 220 / 0.55);

    --chart-1: oklch(0.72 0.12 220);
    --chart-2: oklch(0.66 0.13 300);
    --chart-3: oklch(0.7 0.16 25);
    --chart-4: oklch(0.8 0.13 85);
    --chart-5: oklch(0.74 0.11 165);

    --sidebar: oklch(0.23 0.035 258);
    --sidebar-foreground: oklch(0.95 0.012 240);
    --sidebar-primary: oklch(0.78 0.12 220);
    --sidebar-primary-foreground: oklch(0.2 0.04 230);
    --sidebar-accent: oklch(0.34 0.06 230);
    --sidebar-accent-foreground: oklch(0.85 0.09 215);
    --sidebar-border: oklch(0.95 0.012 240 / 0.11);
    --sidebar-ring: oklch(0.78 0.12 220 / 0.55);

    --syntax-keyword: oklch(0.74 0.12 300);
    --syntax-string: oklch(0.76 0.11 165);
    --syntax-number: oklch(0.8 0.12 75);
    --syntax-comment: oklch(0.62 0.02 250);
    --syntax-function: oklch(0.76 0.11 220);
    --syntax-type: oklch(0.74 0.09 195);

    /* ── Chat surfaces (dark) ── */
    --chat-user-bg: oklch(0.33 0.05 252);
    --chat-user-fg: oklch(0.96 0.01 240);
    --chat-assistant-bg: oklch(0.26 0.035 258);
    --chat-assistant-fg: oklch(0.95 0.012 240);
    --chat-assistant-border: oklch(0.95 0.012 240 / 0.15);

    --elevation-1: 0 1px 1px oklch(0 0 0 / 0.25);
    --elevation-2: 0 1px 2px oklch(0 0 0 / 0.3);
    --elevation-3: 0 2px 6px -1px oklch(0 0 0 / 0.35), 0 1px 2px oklch(0 0 0 / 0.2);
    --elevation-4: 0 8px 16px -4px oklch(0 0 0 / 0.4), 0 2px 4px -2px oklch(0 0 0 / 0.22);
    --elevation-5: 0 16px 32px -8px oklch(0 0 0 / 0.5);
}

/*
 * @layer base — Blueprint's precise, rule-lined drafting philosophy.
 *
 * No glass, no flourish. Geometric headings, hairline rules doing the
 * separating, tabular digits in tables, and the azure line reserved for
 * focus, selection, links, and the primary action.
 */
@layer base {
    body {
        min-height: 100vh;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        letter-spacing: -0.004em;
        font-family: var(--font-sans);
        font-size: var(--text-body-size);
        line-height: var(--text-body-lh);
    }

    /* Headings — Space Grotesk, geometric and technical. */
    h1, h2, h3, h4,
    [data-slot="card-title"],
    [data-slot="dialog-title"],
    [data-slot="sheet-title"],
    [data-slot="alert-dialog-title"] {
        font-family: var(--font-heading);
        font-weight: 600;
        letter-spacing: -0.015em;
        color: var(--foreground);
    }

    code, kbd, samp, pre,
    [data-slot="code"],
    [data-slot="code-block"] {
        font-family: var(--font-mono);
    }

    /* Inline code — neutral ink chip, never accent-colored. */
    :not(pre) > code {
        padding: 0.1em 0.35em;
        border-radius: calc(var(--radius) * 0.5);
        background: color-mix(in oklch, var(--foreground) 7%, transparent);
        color: var(--foreground);
        font-size: 0.9em;
    }

    /* Selection — the azure line. */
    ::selection {
        background: color-mix(in oklch, var(--primary) 28%, transparent);
        color: var(--foreground);
    }

    /* Links — azure, underline-on-hover. */
    a {
        color: color-mix(in oklch, var(--primary) 75%, var(--foreground));
        text-decoration-color: color-mix(in oklch, var(--primary) 40%, transparent);
        text-underline-offset: 0.2em;
        transition: text-decoration-color var(--duration-fast) var(--ease-standard);
    }
    a:hover {
        text-decoration-color: var(--primary);
    }

    [data-slot="sidebar"] {
        background: var(--sidebar);
        border-right: var(--border-width-base) solid var(--sidebar-border);
    }

    /* Drafting tables demand aligned digits — tabular numerals on every
     * table, and a .num utility for any numeric cell/stat elsewhere. */
    [data-slot="table"],
    .num {
        font-variant-numeric: tabular-nums;
    }
}

/*
 * Focus-visible — keyboard-first is a Blueprint signature. A crisp,
 * always-visible azure outline, offset (not inset). Placed outside
 * @layer base so it beats Tailwind's default ring utilities.
 */
[data-slot="button"]:focus-visible,
[data-slot="input"]:focus-visible,
[data-slot="textarea"]:focus-visible,
[data-slot="select-trigger"]:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    box-shadow: none;
}

/* Buttons — quiet weight; opacity absorb on press, instrument-quick. */
[data-slot="button"] {
    font-weight: 500;
    letter-spacing: -0.004em;
}

/* Card titles — pinned to the subtitle role so the scale is the theme's
 * decision, not the card primitive's default. */
[data-slot="card-title"] {
    font-size: var(--text-subtitle-size);
    line-height: var(--text-subtitle-lh);
}

/* Touch targets — desktop keeps the dense drafting ladder; coarse pointers
 * get the 44px floor on every control. */
@media (pointer: coarse) {
    [data-slot="button"] {
        min-height: 2.75rem;
        min-width: 2.75rem;
    }
    [data-slot="input"],
    [data-slot="select-trigger"] {
        min-height: 2.75rem;
    }
}
[data-slot="button"]:hover:not(:disabled) {
    opacity: 0.9;
}
[data-slot="button"]:active:not(:disabled) {
    opacity: 0.82;
    transform: scale(0.99);
}

/* Inputs — clean card surface, hairline rule, azure focus as a flush
 * 1px ring plus border-color change. */
[data-slot="input"],
[data-slot="textarea"],
[data-slot="select-trigger"] {
    background: var(--card);
    border: var(--border-width-base) solid var(--input);
    border-radius: var(--radius);
    color: var(--foreground);
    transition:
        border-color var(--duration-fast) var(--ease-standard),
        box-shadow var(--duration-fast) var(--ease-standard);
}
[data-slot="input"]::placeholder,
[data-slot="textarea"]::placeholder {
    color: var(--muted-foreground);
    opacity: 0.8;
}
[data-slot="input"]:hover:not(:disabled),
[data-slot="textarea"]:hover:not(:disabled),
[data-slot="select-trigger"]:hover:not(:disabled) {
    border-color: color-mix(in oklch, var(--foreground) 30%, transparent);
}
[data-slot="input"]:focus,
[data-slot="textarea"]:focus,
[data-slot="select-trigger"]:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 1px var(--primary);
    outline: none;
}