/*
 * Flint — instrument panel.
 *
 * Braun-era workshop calm with one signal spark. The whole light surface is a
 * warm-stone gray (hue ~80, chroma 0.004 — clearly warmer than graphite's
 * chroma-0, far quieter than any cream), with clean white cards and a deep
 * graphite-umber ink (hue ~60). ONE accent: signal orange (hue ~48) — the
 * machine's indicator lamp — spent only on the primary action, selection,
 * focus, and the live/recording dot. It carries dark umber ink on top
 * (bright-swatch/dark-ink) so it lands high above the contrast floor.
 *
 * Status hues are held clearly apart from the lamp: destructive red is
 * DEEPENED at hue 25 so it never blurs into the orange at 48; warning sits at
 * ochre hue 85, a distinct earthy yellow, never a second orange; success green
 * 150, info blue 248.
 *
 * Dark mode is the panel at night: dark warm graphite (hue ~60, low chroma,
 * never blue), cards a full lightness step above the field (≥0.05 L), and the
 * same signal orange glowing luminous with dark ink.
 *
 * Type: Archivo for headings (grotesk with DIN-instrument character, weight
 * 600), Inter for body, JetBrains Mono for code. Dense/pro register — body
 * 0.9375rem, fixed rem, full role ramp. Radius is a machined, softly
 * chamfered 0.625rem. Shadows are crisp, low, and tight. Motion is mechanical
 * and quick (120/220/320/450ms); springs alias to the standard eases — a good
 * tool clicks, it doesn't bounce.
 *
 * Token contract matches lib-theme-caffe-florian/theme.css (Crema v1).
 */

/*
 * Fonts: consuming apps load Archivo + 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: "Archivo", "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: "Archivo", "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
    --body-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

    /* ── Colors ── warm-stone gray field, white cards, graphite-umber ink,
     * one signal-orange indicator lamp. */
    --background: oklch(0.945 0.004 80);
    --foreground: oklch(0.22 0.008 60);

    --card: oklch(1 0 0);
    --card-foreground: oklch(0.22 0.008 60);

    --popover: oklch(0.99 0.002 80);
    --popover-foreground: oklch(0.22 0.008 60);

    /* Primary — the indicator lamp. Signal orange at hue 48 (pushed off the
     * destructive red at 25), bright enough to glow, with near-black umber ink
     * on top (bright-swatch/dark-ink) — crisp, never orange-on-orange. */
    --primary: oklch(0.66 0.18 48);
    --primary-foreground: oklch(0.15 0.025 48);

    --secondary: oklch(0.915 0.005 75);
    --secondary-foreground: oklch(0.3 0.008 60);

    --muted: oklch(0.915 0.005 75);
    --muted-foreground: oklch(0.45 0.01 60);

    /* Accent — the lamp as a hover/selection tint: a faint warm-orange wash
     * with deep burnt-orange ink, not a second competing fill. */
    --accent: oklch(0.92 0.035 55);
    --accent-foreground: oklch(0.42 0.11 45);

    /* ── Status ── held clearly apart from the signal orange (48). Destructive
     * red is deepened at hue 25 with a light label; warning is ochre at hue 85
     * (earthy yellow, never a second orange) with dark ink; success/info follow
     * the bright-swatch/dark-ink pattern where legible. */
    --destructive: oklch(0.52 0.2 25);
    --destructive-foreground: oklch(0.98 0.01 25);
    --success: oklch(0.62 0.14 150);
    --success-foreground: oklch(0.17 0.03 150);
    --warning: oklch(0.72 0.14 85);
    --warning-foreground: oklch(0.24 0.05 85);
    --info: oklch(0.54 0.13 248);
    --info-foreground: oklch(0.98 0.01 248);

    --border: oklch(0.22 0.008 60 / 0.12);
    --input: oklch(0.22 0.008 60 / 0.14);
    --ring: oklch(0.66 0.18 48 / 0.6);

    /* Chart palette — signal-orange lead, then restrained spaced hues:
     * blue / teal / violet / green. Adjacent hues ≥60° apart, adjacent
     * lightness varied. */
    --chart-1: oklch(0.68 0.17 48);
    --chart-2: oklch(0.56 0.13 248);
    --chart-3: oklch(0.66 0.1 180);
    --chart-4: oklch(0.54 0.14 300);
    --chart-5: oklch(0.68 0.13 130);

    --sidebar: oklch(0.925 0.005 78);
    --sidebar-foreground: oklch(0.22 0.008 60);
    --sidebar-primary: oklch(0.66 0.18 48);
    --sidebar-primary-foreground: oklch(0.15 0.025 48);
    --sidebar-accent: oklch(0.9 0.035 55);
    --sidebar-accent-foreground: oklch(0.42 0.11 45);
    --sidebar-border: oklch(0.22 0.008 60 / 0.1);
    --sidebar-ring: oklch(0.66 0.18 48 / 0.6);

    /* Syntax — muted-precise warm-neutral base; the number readout gets the
     * deep signal hue, everything else stays restrained. */
    --syntax-keyword: oklch(0.5 0.12 300);
    --syntax-string: oklch(0.5 0.11 150);
    --syntax-number: oklch(0.55 0.14 48);
    --syntax-comment: oklch(0.55 0.008 60);
    --syntax-function: oklch(0.5 0.13 248);
    --syntax-type: oklch(0.52 0.09 190);

    /* ── Chat surfaces ──
     * Contract for lib-chat-ui / lib-agent-ui / lib-agent-dock-ui. User bubble
     * is a deep warm-graphite panel with light text (neutral, so the orange
     * stays scarce); assistant bubble is a clean card with a hairline border. */
    --chat-user-bg: oklch(0.28 0.01 60);
    --chat-user-fg: oklch(0.96 0.004 80);
    --chat-assistant-bg: oklch(1 0 0);
    --chat-assistant-fg: oklch(0.22 0.008 60);
    --chat-assistant-border: oklch(0.22 0.008 60 / 0.12);

    /* Machined, softly chamfered. */
    --radius: 0.625rem;

    /* ── Motion ── mechanical and quick; a good tool clicks, it doesn't
     * bounce. Springs alias to the standard eases. */
    --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: 1.3;
    --text-subtitle-size: 1.0625rem;
    --text-subtitle-lh: 1.4;
    --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: 1rem;

    /* ── Elevation ── crisp, low, machined: small offsets, tight blur. */
    --elevation-0: none;
    --elevation-1: 0 1px 1px oklch(0.22 0.008 60 / 0.07);
    --elevation-2: 0 1px 2px oklch(0.22 0.008 60 / 0.08), 0 1px 1px oklch(0.22 0.008 60 / 0.05);
    --elevation-3: 0 2px 6px -1px oklch(0.22 0.008 60 / 0.1), 0 1px 2px -1px oklch(0.22 0.008 60 / 0.06);
    --elevation-4: 0 8px 16px -4px oklch(0.22 0.008 60 / 0.12), 0 2px 4px -2px oklch(0.22 0.008 60 / 0.06);
    --elevation-5: 0 14px 28px -6px oklch(0.22 0.008 60 / 0.18);

    --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 panel at night. Dark warm graphite (hue ~60, low chroma,
 * never blue), cards a full step above the field, popover a step above card
 * and capped below --muted; the signal orange glows luminous with dark ink.
 */
.dark {
    --background: oklch(0.2 0.006 60);
    --foreground: oklch(0.93 0.005 75);

    --card: oklch(0.26 0.007 60);
    --card-foreground: oklch(0.93 0.005 75);

    --popover: oklch(0.28 0.007 60);
    --popover-foreground: oklch(0.93 0.005 75);

    --primary: oklch(0.72 0.185 48);
    --primary-foreground: oklch(0.15 0.025 48);

    --secondary: oklch(0.29 0.007 60);
    --secondary-foreground: oklch(0.9 0.005 75);

    --muted: oklch(0.3 0.007 60);
    --muted-foreground: oklch(0.72 0.01 70);

    --accent: oklch(0.32 0.05 48);
    --accent-foreground: oklch(0.85 0.11 55);

    --destructive: oklch(0.56 0.2 25);
    --destructive-foreground: oklch(0.98 0.01 25);
    --success: oklch(0.7 0.14 150);
    --success-foreground: oklch(0.17 0.03 150);
    --warning: oklch(0.78 0.13 85);
    --warning-foreground: oklch(0.24 0.05 85);
    --info: oklch(0.68 0.13 248);
    --info-foreground: oklch(0.16 0.03 248);

    --border: oklch(0.93 0.005 75 / 0.12);
    --input: oklch(0.93 0.005 75 / 0.14);
    --ring: oklch(0.72 0.185 48 / 0.6);

    --chart-1: oklch(0.74 0.17 48);
    --chart-2: oklch(0.66 0.13 248);
    --chart-3: oklch(0.72 0.1 180);
    --chart-4: oklch(0.64 0.14 300);
    --chart-5: oklch(0.74 0.13 130);

    --sidebar: oklch(0.22 0.007 60);
    --sidebar-foreground: oklch(0.93 0.005 75);
    --sidebar-primary: oklch(0.72 0.185 48);
    --sidebar-primary-foreground: oklch(0.15 0.025 48);
    --sidebar-accent: oklch(0.32 0.05 48);
    --sidebar-accent-foreground: oklch(0.85 0.11 55);
    --sidebar-border: oklch(0.93 0.005 75 / 0.09);
    --sidebar-ring: oklch(0.72 0.185 48 / 0.6);

    --syntax-keyword: oklch(0.72 0.12 300);
    --syntax-string: oklch(0.74 0.12 150);
    --syntax-number: oklch(0.76 0.15 48);
    --syntax-comment: oklch(0.6 0.008 65);
    --syntax-function: oklch(0.72 0.13 248);
    --syntax-type: oklch(0.72 0.09 190);

    /* ── Chat surfaces (dark) ── */
    --chat-user-bg: oklch(0.34 0.008 60);
    --chat-user-fg: oklch(0.96 0.004 80);
    --chat-assistant-bg: oklch(0.26 0.007 60);
    --chat-assistant-fg: oklch(0.93 0.005 75);
    --chat-assistant-border: oklch(0.93 0.005 75 / 0.12);

    --elevation-1: 0 1px 1px oklch(0 0 0 / 0.32);
    --elevation-2: 0 1px 2px oklch(0 0 0 / 0.4), 0 1px 1px oklch(0 0 0 / 0.25);
    --elevation-3: 0 2px 6px -1px oklch(0 0 0 / 0.42), 0 1px 2px -1px oklch(0 0 0 / 0.25);
    --elevation-4: 0 8px 16px -4px oklch(0 0 0 / 0.46), 0 2px 4px -2px oklch(0 0 0 / 0.25);
    --elevation-5: 0 14px 28px -6px oklch(0 0 0 / 0.55);
}

/*
 * @layer base — Flint's instrument-panel philosophy.
 *
 * No glass, no flourish. DIN-flavored grotesk headings, calm warm-neutral
 * surfaces hairline-separated, aligned digits everywhere numbers live, and the
 * signal-orange lamp reserved for focus, selection, and the primary action.
 * Everything else stays quiet and out of the way.
 */
@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 — Archivo, machined and firm. */
    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 — warm-neutral chip. */
    :not(pre) > code {
        padding: 0.1em 0.35em;
        border-radius: calc(var(--radius) * 0.5);
        background: color-mix(in oklch, var(--foreground) 6%, transparent);
        color: var(--foreground);
        font-size: 0.9em;
    }

    /* Instrument readouts — aligned digits wherever numbers stack. */
    [data-slot="table"],
    .num {
        font-variant-numeric: tabular-nums;
    }

    /* Selection — the signal lamp. */
    ::selection {
        background: color-mix(in oklch, var(--primary) 30%, transparent);
        color: var(--foreground);
    }

    /* Links — signal-tinted ink, underline-on-hover. */
    a {
        color: color-mix(in oklch, var(--primary) 65%, 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);
    }
}

/*
 * Focus-visible — keyboard-first is a Flint signature. Buttons get a crisp,
 * always-visible 2px signal-orange outline with 2px offset; inputs get a flush
 * 1px ring + border-color change (below). Placed outside @layer base so it
 * beats Tailwind's default ring utilities.
 */
[data-slot="button"]:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    box-shadow: none;
}
[data-slot="input"]:focus-visible,
[data-slot="textarea"]:focus-visible,
[data-slot="select-trigger"]:focus-visible {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 1px var(--primary);
}

/* Buttons — quiet weight; opacity absorb on press, mechanical-fast. */
[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 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 border, signal focus as a flush ring. */
[data-slot="input"],
[data-slot="textarea"],
[data-slot="select-trigger"] {
    background: var(--card);
    border: var(--border-width-base) solid var(--border);
    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) 24%, 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;
}