/*
 * Porcelain — calm, neutral bone-china surfaces warmed by a single restrained
 * clay accent. Built as the "iCloud / Apple-Settings calm, but warm" answer for
 * a back-of-house personal-cloud utility: quiet chrome, confident whitespace,
 * hairline separation, one warm note that points at the next action.
 *
 * Palette rationale. The field is a true off-white porcelain, not a cream band:
 * chroma is held to a whisper (≤0.004) and the hue leans faintly COOL (~265,
 * bone china) so the background reads clean-neutral at very high L (0.985) —
 * deliberately above and to the cool side of the banned AI cream/sand region
 * (L 0.84–0.97, warm hue 40–100). Cards step up to pure white; separation is a
 * hairline border plus the faintest neutral elevation. Ink is a warm-leaning
 * near-black charcoal (hue ~55) — the one place quiet warmth lives in the text.
 * The lone accent is a muted clay / soft terracotta (hue ~47), a restrained
 * echo of siena used on ≤10% of the surface: primary action, selection, focus,
 * links — never as a wash. Status quartet is held clearly apart in hue (clay 47
 * / red 27 / green 150 / amber 78 / blue 245) so meaning never muddies against
 * the warm accent.
 *
 * Token contract matches lib-theme-caffe-florian/theme.css (Crema v1).
 */

/*
 * Fonts: consuming apps should load Albert Sans + Newsreader + 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
 * inside this file — or smuggling the URL in a comment for a build script to
 * lift — breaks PostCSS's ordering rules and is banned by the contract, so
 * neither is done here.
 */

:root {
    --font-sans: "Albert Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-heading: "Newsreader", Georgia, "Times New Roman", 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 (--font-heading/--font-sans collide
     * with Tailwind's own font-* namespace). Mirror --font-heading/--font-sans. */
    --heading-family: "Newsreader", Georgia, "Times New Roman", serif;
    --body-family: "Albert Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

    /* ── Colors ── cool bone-china porcelain field, warm charcoal ink, one
     * muted clay accent. Kept out of the cream band by very low chroma and a
     * faint cool (bone) hue at high L. */
    --background: oklch(0.985 0.004 265);
    --foreground: oklch(0.21 0.008 55);

    --card: oklch(1 0 0);
    --card-foreground: oklch(0.21 0.008 55);

    --popover: oklch(0.995 0.003 265);
    --popover-foreground: oklch(0.21 0.008 55);

    /* Primary — muted clay. Deepened so white label clears the 4.5:1 floor
     * (5.13:1) while still reading calm and premium, not loud. */
    --primary: oklch(0.54 0.11 47);
    --primary-foreground: oklch(0.99 0.004 60);

    --secondary: oklch(0.955 0.004 265);
    --secondary-foreground: oklch(0.30 0.008 55);

    --muted: oklch(0.955 0.004 265);
    --muted-foreground: oklch(0.50 0.008 55);

    /* Accent — faint clay tint surface with deep clay ink. The single warm
     * note; used for hovers/selection, never a body wash. */
    --accent: oklch(0.94 0.02 47);
    --accent-foreground: oklch(0.42 0.10 47);

    --destructive: oklch(0.55 0.20 27);
    --destructive-foreground: oklch(0.99 0.004 60);
    /* Success — held at hue 150 (well clear of clay 47), dark ink on top. */
    --success: oklch(0.57 0.13 150);
    --success-foreground: oklch(0.16 0.03 150);
    /* Warning — amber ochre, dark ink on top. */
    --warning: oklch(0.75 0.14 78);
    --warning-foreground: oklch(0.22 0.04 78);
    /* Info — calm blue, light label on top. */
    --info: oklch(0.53 0.145 245);
    --info-foreground: oklch(0.99 0.004 60);

    --border: oklch(0.21 0.008 55 / 0.10);
    --input: oklch(0.21 0.008 55 / 0.10);
    --ring: oklch(0.54 0.11 47 / 0.5);

    /* Chart palette — clay lead, then hues spaced ≥60° apart (clay / teal /
     * blue / violet / green), adjacent lightness varied. Calm, low-shout. */
    --chart-1: oklch(0.62 0.11 47);
    --chart-2: oklch(0.60 0.08 195);
    --chart-3: oklch(0.55 0.10 255);
    --chart-4: oklch(0.66 0.09 315);
    --chart-5: oklch(0.64 0.10 150);

    --sidebar: oklch(0.97 0.004 265);
    --sidebar-foreground: oklch(0.21 0.008 55);
    --sidebar-primary: oklch(0.54 0.11 47);
    --sidebar-primary-foreground: oklch(0.99 0.004 60);
    --sidebar-accent: oklch(0.94 0.02 47);
    --sidebar-accent-foreground: oklch(0.42 0.10 47);
    --sidebar-border: oklch(0.21 0.008 55 / 0.08);
    --sidebar-ring: oklch(0.54 0.11 47 / 0.5);

    --syntax-keyword: oklch(0.50 0.11 47);
    --syntax-string: oklch(0.50 0.11 150);
    --syntax-number: oklch(0.54 0.11 78);
    --syntax-comment: oklch(0.58 0.008 60);
    --syntax-function: oklch(0.50 0.13 255);
    --syntax-type: oklch(0.52 0.08 210);

    /* ── Chat surfaces ──
     * Contract for lib-agent-chat-ui / lib-agent-dock-ui. User bubble is a
     * filled deep clay with a light label; assistant bubble is a clean white
     * card with a hairline border. */
    --chat-user-bg: oklch(0.50 0.11 47);
    --chat-user-fg: oklch(0.99 0.004 60);
    --chat-assistant-bg: oklch(1 0 0);
    --chat-assistant-fg: oklch(0.21 0.008 55);
    --chat-assistant-border: oklch(0.21 0.008 55 / 0.10);

    /* Calm-modern radius. */
    --radius: 0.875rem;

    /* ── Motion ── calm, product-fast. */
    --duration-fast: 150ms;
    --duration-base: 300ms;
    --duration-slow: 420ms;
    --duration-slower: 560ms;
    --duration-spring: 300ms;

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

    /* Calm theme — springs alias to standard easings (no overshoot). Personality
     * lives in the values, never in absence (the avalon rule). */
    --ease-spring-gentle: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-spring-snappy: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-spring-bouncy: cubic-bezier(0.4, 0, 0.2, 1);

    /* ── Typography ── product register, fixed rem sizes, full role ramp.
     * Newsreader supplies a restrained modern-serif heading; Albert Sans is the
     * humanist body/UI sans. */
    --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: 1.625rem;
    --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 ── whisper-soft neutral shadows, near-black at very low
     * alpha. Calm resting cards, low-key lift. */
    --elevation-0: none;
    --elevation-1: 0 1px 2px oklch(0.21 0.008 55 / 0.04);
    --elevation-2: 0 1px 3px oklch(0.21 0.008 55 / 0.06), 0 1px 2px oklch(0.21 0.008 55 / 0.03);
    --elevation-3: 0 4px 10px -3px oklch(0.21 0.008 55 / 0.07), 0 2px 4px -2px oklch(0.21 0.008 55 / 0.04);
    --elevation-4: 0 12px 28px -6px oklch(0.21 0.008 55 / 0.09), 0 4px 8px -4px oklch(0.21 0.008 55 / 0.04);
    --elevation-5: 0 24px 48px -12px oklch(0.21 0.008 55 / 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 — warm graphite (#232120-ish), not blue-black and not umber-brown.
 * Very low chroma at a warm hue (~60) keeps it a neutral warm charcoal; the clay
 * accent brightens just enough and carries dark ink per the contract.
 */
.dark {
    --background: oklch(0.20 0.006 60);
    --foreground: oklch(0.94 0.006 70);

    --card: oklch(0.26 0.007 60);
    --card-foreground: oklch(0.94 0.006 70);

    --popover: oklch(0.275 0.007 60);
    --popover-foreground: oklch(0.94 0.006 70);

    --primary: oklch(0.66 0.12 50);
    --primary-foreground: oklch(0.18 0.02 50);

    --secondary: oklch(0.28 0.007 60);
    --secondary-foreground: oklch(0.90 0.006 70);

    --muted: oklch(0.28 0.007 60);
    --muted-foreground: oklch(0.70 0.008 65);

    --accent: oklch(0.32 0.04 50);
    --accent-foreground: oklch(0.85 0.08 50);

    --destructive: oklch(0.62 0.19 27);
    --destructive-foreground: oklch(0.16 0.02 27);
    --success: oklch(0.70 0.15 150);
    --success-foreground: oklch(0.16 0.03 150);
    --warning: oklch(0.80 0.14 78);
    --warning-foreground: oklch(0.20 0.04 78);
    --info: oklch(0.72 0.13 245);
    --info-foreground: oklch(0.18 0.03 245);

    --border: oklch(0.95 0.006 70 / 0.10);
    --input: oklch(0.95 0.006 70 / 0.10);
    --ring: oklch(0.66 0.12 50 / 0.5);

    --chart-1: oklch(0.70 0.12 50);
    --chart-2: oklch(0.70 0.08 195);
    --chart-3: oklch(0.68 0.10 255);
    --chart-4: oklch(0.74 0.09 315);
    --chart-5: oklch(0.72 0.11 150);

    --sidebar: oklch(0.22 0.006 60);
    --sidebar-foreground: oklch(0.94 0.006 70);
    --sidebar-primary: oklch(0.66 0.12 50);
    --sidebar-primary-foreground: oklch(0.18 0.02 50);
    --sidebar-accent: oklch(0.32 0.04 50);
    --sidebar-accent-foreground: oklch(0.85 0.08 50);
    --sidebar-border: oklch(0.95 0.006 70 / 0.08);
    --sidebar-ring: oklch(0.66 0.12 50 / 0.5);

    --syntax-keyword: oklch(0.74 0.12 50);
    --syntax-string: oklch(0.74 0.13 150);
    --syntax-number: oklch(0.78 0.13 78);
    --syntax-comment: oklch(0.58 0.008 60);
    --syntax-function: oklch(0.72 0.13 255);
    --syntax-type: oklch(0.72 0.08 210);

    /* ── Chat surfaces (dark) ── deep clay bubble, dark ink label
     * (dark-ink-on-bright, 5.56:1). */
    --chat-user-bg: oklch(0.64 0.115 50);
    --chat-user-fg: oklch(0.16 0.02 50);
    --chat-assistant-bg: oklch(0.26 0.007 60);
    --chat-assistant-fg: oklch(0.94 0.006 70);
    --chat-assistant-border: oklch(0.95 0.006 70 / 0.10);

    --elevation-1: 0 1px 2px oklch(0 0 0 / 0.3);
    --elevation-2: 0 1px 3px oklch(0 0 0 / 0.4), 0 1px 2px oklch(0 0 0 / 0.25);
    --elevation-3: 0 4px 10px oklch(0 0 0 / 0.35), 0 2px 4px oklch(0 0 0 / 0.25);
    --elevation-4: 0 12px 28px oklch(0 0 0 / 0.4), 0 4px 8px oklch(0 0 0 / 0.25);
    --elevation-5: 0 24px 48px oklch(0 0 0 / 0.5);
}

/*
 * @layer base — Porcelain's calm-utility philosophy.
 *
 * No glass, no offsets. Humanist sans body; restrained modern-serif headings
 * used sparingly. Cards sit on the porcelain field with a hairline border and a
 * whisper-soft neutral shadow — calm resting surfaces, not floating chrome. The
 * clay accent points; everything else is neutral.
 */
@layer base {
    body {
        min-height: 100vh;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        letter-spacing: -0.006em;
        font-family: var(--font-sans);
        font-size: var(--text-body-size);
        line-height: var(--text-body-lh);
    }

    /* Serif headings — Newsreader, kept calm (not editorial-loud): moderate
     * weight, tight-but-gentle tracking. */
    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: 560;
        letter-spacing: -0.012em;
        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 faint chip; the clay accent stays
     * reserved for actions, links and focus. */
    :not(pre) > code {
        padding: 0.1em 0.35em;
        border-radius: calc(var(--radius) * 0.4);
        background: color-mix(in oklch, var(--foreground) 7%, transparent);
        color: var(--foreground);
        font-size: 0.9em;
    }

    /* Selection — the one warm note, faint clay wash. */
    ::selection {
        background: color-mix(in oklch, var(--primary) 18%, transparent);
        color: var(--foreground);
    }

    /* Links — clay, quietly underlined on hover. */
    a {
        color: var(--primary);
        text-decoration-color: color-mix(in oklch, var(--primary) 35%, transparent);
        text-underline-offset: 0.2em;
        transition: text-decoration-color var(--duration-fast) var(--ease-standard);
    }
    a:hover {
        text-decoration-color: var(--primary);
    }

    /* Card & overlay surfaces — hairline border + whisper elevation so cards
     * read as calm resting tiles on porcelain. */
    [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);
    }

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

    [data-slot="button"] {
        font-weight: 500;
    }

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

/*
 * Unlayered component polish — placed outside @layer base so it beats Tailwind's
 * default utility classes shipped with shadcn. Porcelain keeps controls calm and
 * comfortably sized with clay focus: inputs are ≥44px everywhere; buttons keep
 * their density under a mouse and clear the 44px floor on coarse pointers.
 */
[data-slot="button"]:hover:not(:disabled) {
    opacity: 0.9;
}
[data-slot="button"]:active:not(:disabled) {
    opacity: 0.8;
    transform: scale(0.99);
}
[data-slot="button"]:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    box-shadow: none;
}

[data-slot="input"],
[data-slot="textarea"],
[data-slot="select-trigger"] {
    min-height: 2.75rem;
    padding-inline: 0.875rem;
    font-size: 0.9375rem;
    background: var(--card);
    border: 1px 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="textarea"] {
    min-height: 6.25rem;
    padding-block: 0.75rem;
    line-height: 1.55;
    resize: vertical;
}
[data-slot="input"]::placeholder,
[data-slot="textarea"]::placeholder {
    color: var(--muted-foreground);
    opacity: 0.7;
}
[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) 22%, transparent);
}
[data-slot="input"]:focus,
[data-slot="input"]:focus-visible,
[data-slot="textarea"]:focus,
[data-slot="textarea"]:focus-visible,
[data-slot="select-trigger"]:focus,
[data-slot="select-trigger"]:focus-visible {
    border-color: var(--primary);
    box-shadow: 0 0 0 1px var(--primary);
    outline: none;
}

[data-slot="card"] {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition:
        border-color var(--duration-base) var(--ease-standard),
        box-shadow var(--duration-base) var(--ease-standard);
}

/* 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 — buttons clear the 44px floor on coarse pointers
 * (inputs are already ≥44px everywhere above). */
@media (pointer: coarse) {
    [data-slot="button"] {
        min-height: 2.75rem;
        min-width: 2.75rem;
    }
}