/*
 * Siena — drenched Mediterranean courtyard. A Sienese piazza at five in the
 * afternoon: the background is a real terracotta wall, not a tinted white;
 * cards are sun-bleached plaster panels resting ON that wall; the ink is a
 * deep warm olive-brown that never goes black. Warmth lives in the surface
 * itself — hierarchy is done by material (plaster on clay), not by shadow
 * theatrics or balloon corners.
 *
 * Palette rationale: burnt sienna carries the primary action (deep enough for
 * plaster-white labels at 6.9:1); worn-stone secondaries and an ochre warning
 * stay inside the courtyard's heat; one cool note — a Mediterranean blue — is
 * spent on accent and info so the warmth has something to push against. Dark
 * mode is the same courtyard at dusk: umber-brown surfaces (never blue-gray)
 * with the terracotta turned into glow.
 *
 * Token contract matches lib-theme-pristine/theme.css.
 */

/*
 * Fonts: consuming apps load Fraunces + Albert Sans + JetBrains Mono at the
 * top of their entry CSS via the Google Fonts URL documented in this theme's
 * README. No @import here — PostCSS ordering forbids it — and no URL smuggled
 * in comments for build scripts to lift.
 */

:root {
    --font-sans: "Albert Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-heading: "Fraunces", Georgia, serif;
    --font-mono: "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace;

    /* Tailwind utility families — distinct names so a consuming app's
     * `@theme inline` can indirect to these. Mirror --font-heading/--font-sans. */
    --heading-family: "Fraunces", Georgia, serif;
    --body-family: "Albert Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

    /* ── Colors ── terracotta field, plaster cards, olive-brown ink.
     * The background commits: L 0.84, chroma 0.055 at hue 55 — a painted
     * wall, not the pale cream band. */
    --background: oklch(0.84 0.055 55);
    --foreground: oklch(0.24 0.03 60);

    --card: oklch(0.96 0.018 75);
    --card-foreground: oklch(0.24 0.03 60);

    --popover: oklch(0.97 0.015 75);
    --popover-foreground: oklch(0.24 0.03 60);

    /* Burnt sienna — deep enough to carry plaster-white labels (6.9:1). */
    --primary: oklch(0.46 0.13 38);
    --primary-foreground: oklch(0.97 0.02 75);

    /* Worn stone — a step off the wall, still warm. */
    --secondary: oklch(0.9 0.03 68);
    --secondary-foreground: oklch(0.28 0.035 55);

    --muted: oklch(0.89 0.035 65);
    --muted-foreground: oklch(0.38 0.045 55);

    /* The one cool note — washed Mediterranean blue. */
    --accent: oklch(0.88 0.04 230);
    --accent-foreground: oklch(0.3 0.08 240);

    --destructive: oklch(0.48 0.18 28);
    --destructive-foreground: oklch(0.97 0.02 75);
    /* Olive success — courtyard green, dark olive ink on top. */
    --success: oklch(0.62 0.11 130);
    --success-foreground: oklch(0.18 0.05 135);
    /* Ochre warning — sun pigment, umber ink label. */
    --warning: oklch(0.76 0.13 80);
    --warning-foreground: oklch(0.24 0.06 80);
    /* Info shares the accent's Mediterranean blue, deepened for plaster text. */
    --info: oklch(0.46 0.09 245);
    --info-foreground: oklch(0.97 0.02 75);

    /* Hairlines are ink washes — on a colored wall they need a little more
     * presence than they would on white. */
    --border: oklch(0.24 0.03 60 / 0.2);
    --input: oklch(0.24 0.03 60 / 0.2);
    --ring: oklch(0.46 0.13 38 / 0.5);

    /* Chart palette — terracotta / olive / sea blue / ochre / plum.
     * Hues ≥60° apart, adjacent lightness varied. */
    --chart-1: oklch(0.58 0.13 40);
    --chart-2: oklch(0.68 0.1 125);
    --chart-3: oklch(0.55 0.1 240);
    --chart-4: oklch(0.75 0.12 85);
    --chart-5: oklch(0.62 0.09 320);

    /* Sidebar — a deeper stripe of the same wall, in shadow. */
    --sidebar: oklch(0.8 0.065 50);
    --sidebar-foreground: oklch(0.24 0.03 60);
    --sidebar-primary: oklch(0.46 0.13 38);
    --sidebar-primary-foreground: oklch(0.97 0.02 75);
    --sidebar-accent: oklch(0.86 0.05 55);
    --sidebar-accent-foreground: oklch(0.38 0.12 38);
    --sidebar-border: oklch(0.24 0.03 60 / 0.16);
    --sidebar-ring: oklch(0.46 0.13 38 / 0.5);

    --syntax-keyword: oklch(0.44 0.13 38);
    --syntax-string: oklch(0.46 0.09 135);
    --syntax-number: oklch(0.5 0.12 60);
    --syntax-comment: oklch(0.5 0.03 60);
    --syntax-function: oklch(0.44 0.1 245);
    --syntax-type: oklch(0.46 0.07 195);

    /* ── Chat surfaces ──
     * Contract for lib-chat-ui / lib-agent-ui / lib-agent-dock-ui. User
     * bubble is filled burnt sienna with plaster text; assistant bubble is
     * a plaster card with an ink hairline. */
    --chat-user-bg: oklch(0.44 0.13 38);
    --chat-user-fg: oklch(0.97 0.02 75);
    --chat-assistant-bg: oklch(0.96 0.018 75);
    --chat-assistant-fg: oklch(0.24 0.03 60);
    --chat-assistant-border: oklch(0.24 0.03 60 / 0.16);

    /* Modest, honest corners — softness comes from color, not radius. */
    --radius: 0.75rem;

    /* ── Motion ── settled and unhurried, still product-fast. */
    --duration-fast: 130ms;
    --duration-base: 300ms;
    --duration-slow: 420ms;
    --duration-slower: 560ms;
    --duration-spring: 340ms;

    --ease-standard: cubic-bezier(0.25, 0.1, 0.25, 1);
    --ease-decelerate: cubic-bezier(0, 0, 0.2, 1);
    --ease-accelerate: cubic-bezier(0.4, 0, 1, 1);
    --ease-emphasized: cubic-bezier(0.3, 0, 0.15, 1);

    /* Calm theme — springs alias to standard easings rather than bounce.
     * Personality lives in the values, never in absence. */
    --ease-spring-gentle: var(--ease-standard);
    --ease-spring-snappy: var(--ease-decelerate);
    --ease-spring-bouncy: var(--ease-emphasized);

    /* ── Typography ── product register: fixed rem sizes, full ramp.
     * Fraunces carries the display voice; Albert Sans does the work. */
    --text-hero-size: 3.5rem;
    --text-hero-lh: 3.75rem;
    --text-display-size: 3rem;
    --text-display-lh: 3.25rem;
    --text-headline-size: 2rem;
    --text-headline-lh: 2.375rem;
    --text-title-size: 1.5rem;
    --text-title-lh: 1.875rem;
    --text-subtitle-size: 1.1875rem;
    --text-subtitle-lh: 1.75rem;
    --text-body-size: 1.0625rem;
    --text-body-lh: 1.625rem;
    --text-label-size: 0.9375rem;
    --text-label-lh: 1.25rem;
    --text-caption-size: 0.8125rem;
    --text-caption-lh: 1.125rem;

    /* ── Elevation ── warm umber shadows, low-key: things rest on the wall,
     * they don't float. Never pure black. */
    --elevation-0: none;
    --elevation-1: 0 1px 2px oklch(0.24 0.03 60 / 0.1);
    --elevation-2: 0 1px 3px oklch(0.24 0.03 60 / 0.12), 0 1px 2px oklch(0.24 0.03 60 / 0.08);
    --elevation-3: 0 4px 10px -2px oklch(0.24 0.03 60 / 0.14), 0 2px 4px -2px oklch(0.24 0.03 60 / 0.08);
    --elevation-4: 0 12px 28px -6px oklch(0.24 0.03 60 / 0.18), 0 4px 10px -4px oklch(0.24 0.03 60 / 0.1);
    --elevation-5: 0 24px 48px -12px oklch(0.24 0.03 60 / 0.26);

    --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 — dusk in the same courtyard. Deep umber-brown surfaces (never
 * blue-gray); the terracotta becomes glow and takes dark umber labels, since
 * dark-ink-on-bright beats white-on-mid-tone.
 */
.dark {
    --background: oklch(0.22 0.02 55);
    --foreground: oklch(0.93 0.02 75);

    --card: oklch(0.28 0.022 55);
    --card-foreground: oklch(0.93 0.02 75);

    --popover: oklch(0.295 0.024 55);
    --popover-foreground: oklch(0.93 0.02 75);

    --primary: oklch(0.7 0.14 45);
    --primary-foreground: oklch(0.16 0.03 45);

    --secondary: oklch(0.31 0.025 55);
    --secondary-foreground: oklch(0.9 0.02 75);

    --muted: oklch(0.3 0.025 55);
    --muted-foreground: oklch(0.72 0.03 70);

    --accent: oklch(0.3 0.05 240);
    --accent-foreground: oklch(0.85 0.06 235);

    --destructive: oklch(0.64 0.19 30);
    --destructive-foreground: oklch(0.14 0.03 28);
    --success: oklch(0.7 0.12 130);
    --success-foreground: oklch(0.14 0.04 135);
    --warning: oklch(0.78 0.13 80);
    --warning-foreground: oklch(0.2 0.05 80);
    --info: oklch(0.7 0.1 240);
    --info-foreground: oklch(0.14 0.03 245);

    --border: oklch(0.93 0.02 75 / 0.12);
    --input: oklch(0.93 0.02 75 / 0.12);
    --ring: oklch(0.7 0.14 45 / 0.5);

    --chart-1: oklch(0.68 0.13 40);
    --chart-2: oklch(0.75 0.1 125);
    --chart-3: oklch(0.68 0.1 240);
    --chart-4: oklch(0.8 0.12 85);
    --chart-5: oklch(0.72 0.09 320);

    --sidebar: oklch(0.2 0.02 55);
    --sidebar-foreground: oklch(0.93 0.02 75);
    --sidebar-primary: oklch(0.7 0.14 45);
    --sidebar-primary-foreground: oklch(0.16 0.03 45);
    --sidebar-accent: oklch(0.32 0.04 45);
    --sidebar-accent-foreground: oklch(0.88 0.07 50);
    --sidebar-border: oklch(0.93 0.02 75 / 0.1);
    --sidebar-ring: oklch(0.7 0.14 45 / 0.5);

    --syntax-keyword: oklch(0.75 0.13 45);
    --syntax-string: oklch(0.76 0.11 135);
    --syntax-number: oklch(0.8 0.12 65);
    --syntax-comment: oklch(0.6 0.03 65);
    --syntax-function: oklch(0.74 0.1 240);
    --syntax-type: oklch(0.75 0.07 195);

    /* ── Chat surfaces (dark) ── */
    --chat-user-bg: oklch(0.48 0.13 40);
    --chat-user-fg: oklch(0.97 0.02 75);
    --chat-assistant-bg: oklch(0.29 0.023 55);
    --chat-assistant-fg: oklch(0.93 0.02 75);
    --chat-assistant-border: oklch(0.93 0.02 75 / 0.12);

    /* Dusk shadows — deeper umber, never blue-black. */
    --elevation-1: 0 1px 2px oklch(0.1 0.012 55 / 0.4);
    --elevation-2: 0 1px 3px oklch(0.1 0.012 55 / 0.45), 0 1px 2px oklch(0.1 0.012 55 / 0.3);
    --elevation-3: 0 4px 10px -2px oklch(0.1 0.012 55 / 0.45), 0 2px 4px -2px oklch(0.1 0.012 55 / 0.3);
    --elevation-4: 0 12px 28px -6px oklch(0.1 0.012 55 / 0.5), 0 4px 10px -4px oklch(0.1 0.012 55 / 0.3);
    --elevation-5: 0 24px 48px -12px oklch(0.1 0.012 55 / 0.6);
}

/*
 * @layer base — Siena's material philosophy.
 *
 * Plaster panels on a painted wall: cards get a hairline ink border and a
 * low warm shadow (they rest, they don't float). Fraunces carries headings;
 * everything else is quiet Albert Sans on olive-brown ink.
 */
@layer base {
    body {
        min-height: 100vh;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        letter-spacing: -0.011em;
        font-family: var(--font-sans);
        font-size: var(--text-body-size);
        line-height: var(--text-body-lh);
    }

    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: -0.01em;
        color: var(--foreground);
    }

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

    /* Inline code — neutral ink on a warm chip; sienna stays reserved for
     * actions, links and focus so the accent keeps pointing at one thing. */
    :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 — sun-warmed sienna wash. */
    ::selection {
        background: color-mix(in oklch, var(--primary) 24%, transparent);
        color: var(--foreground);
    }

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

    /* Plaster panels — hairline ink border + resting warm shadow. Border
     * AND shadow both stay light so surfaces read as material, not chrome. */
    [data-slot="card"],
    [data-slot="popover-content"],
    [data-slot="dropdown-menu-content"],
    [data-slot="context-menu-content"],
    [data-slot="menubar-content"],
    [data-slot="hover-card-content"],
    [data-slot="select-content"],
    [data-slot="combobox-content"],
    [data-slot="command"],
    [data-slot="tooltip-content"],
    [data-slot="sheet-content"],
    [data-slot="dialog-content"],
    [data-slot="alert-dialog-content"],
    [data-slot="drawer-content"] {
        border: var(--border-width-base) solid var(--border);
        box-shadow: var(--elevation-2);
    }

    [data-slot="popover-content"],
    [data-slot="dropdown-menu-content"],
    [data-slot="context-menu-content"],
    [data-slot="menubar-content"],
    [data-slot="hover-card-content"],
    [data-slot="select-content"],
    [data-slot="combobox-content"],
    [data-slot="tooltip-content"] {
        box-shadow: var(--elevation-3);
    }

    [data-slot="sheet-content"],
    [data-slot="dialog-content"],
    [data-slot="alert-dialog-content"],
    [data-slot="drawer-content"] {
        box-shadow: var(--elevation-4);
    }

    [data-slot="button"] {
        font-weight: 500;
    }
    [data-slot="button"]:focus-visible {
        outline: 2px solid var(--primary);
        outline-offset: 2px;
    }

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

/*
 * Unlayered control tuning — outside @layer base so it beats Tailwind's
 * utility defaults shipped with shadcn primitives.
 */

/* 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 its density; 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;
    }
}