@import "tailwindcss";

@plugin "tailwindcss-animate";
@plugin "@tailwindcss/typography";

@custom-variant dark (&:is(.dark *));

@theme inline {
    --color-background: var(--background);
    --color-foreground: var(--foreground);
    --font-sans: var(--font-latin), var(--font-cjk), system-ui, sans-serif;
    --font-mono: var(--font-mono);
    --color-ring: var(--ring);
    --color-input: var(--input);
    --color-border: var(--border);
    --color-destructive: var(--destructive);
    --color-accent-foreground: var(--accent-foreground);
    --color-accent: var(--accent);
    --color-muted-foreground: var(--muted-foreground);
    --color-muted: var(--muted);
    --color-secondary-foreground: var(--secondary-foreground);
    --color-secondary: var(--secondary);
    --color-primary-foreground: var(--primary-foreground);
    --color-primary: var(--primary);
    --color-popover-foreground: var(--popover-foreground);
    --color-popover: var(--popover);
    --color-card-foreground: var(--card-foreground);
    --color-card: var(--card);
    --radius-sm: calc(var(--radius) - 4px);
    --radius-md: calc(var(--radius) - 2px);
    --radius-lg: var(--radius);
    --radius-xl: calc(var(--radius) + 4px);

    /* App-specific tokens */
    --color-canvas: var(--canvas);
    --color-faint: var(--faint);
    --color-marker: var(--marker);
    --color-marker-soft: var(--marker-soft);
    --color-marker-ink: var(--marker-ink);
    --color-surface-0: var(--surface-0);
    --color-surface-1: var(--surface-1);
    --color-surface-2: var(--surface-2);
    --color-border-subtle: var(--border-subtle);
    --color-border-default: var(--border-default);
    --color-interactive-hover: var(--interactive-hover);
    --color-interactive-active: var(--interactive-active);
    --color-success: var(--success);
    --color-success-muted: var(--success-muted);
}

/*
 * Light: a quiet light table. Ink for primary actions, a highlighter
 * yellow reserved for what the AI just changed.
 */
:root {
    --radius: 0.75rem;

    --canvas: #f4f5f7;
    --background: #f4f5f7;
    --foreground: #14181d;

    --card: #ffffff;
    --card-foreground: #14181d;
    --popover: #ffffff;
    --popover-foreground: #14181d;

    --primary: #14181d;
    --primary-foreground: #ffffff;
    --secondary: #f1f3f5;
    --secondary-foreground: #14181d;
    --muted: #f1f3f5;
    --muted-foreground: #5d6672;
    --faint: #687180;
    --accent: #eef0f3;
    --accent-foreground: #14181d;
    --destructive: #c9372c;

    --border: #e4e7eb;
    --input: #dfe3e8;
    --ring: #14181d;

    --marker: #ffd84d;
    --marker-soft: #fff4bf;
    --marker-ink: #6b5200;

    --surface-0: #ffffff;
    --surface-1: #f7f8fa;
    --surface-2: #f1f3f5;
    --border-subtle: #eceef1;
    --border-default: #e4e7eb;
    --interactive-hover: #f1f3f5;
    --interactive-active: #e7eaee;
    --success: #1f9e5a;
    --success-muted: #e3f5ea;

    --shadow-float:
        0 1px 2px rgb(20 24 29 / 0.05), 0 10px 30px -8px rgb(20 24 29 / 0.14);
    --shadow-pop:
        0 1px 2px rgb(20 24 29 / 0.06), 0 18px 48px -12px rgb(20 24 29 / 0.22);

    --duration-normal: 200ms;
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/*
 * Han characters are drawn differently in Simplified Chinese, Traditional
 * Chinese and Japanese: each language lists its own system fonts first.
 */
:root {
    --font-cjk:
        "PingFang SC", "Hiragino Sans GB", "Noto Sans CJK SC",
        "Microsoft YaHei", "Hiragino Sans", "Meiryo";
}
:root:lang(ja) {
    --font-cjk:
        "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans CJK JP",
        "Yu Gothic UI", "Meiryo", "PingFang SC";
}
:root:lang(zh-Hant) {
    --font-cjk:
        "PingFang TC", "Noto Sans CJK TC", "Microsoft JhengHei",
        "Hiragino Sans", "PingFang SC";
}

/*
 * Dark: a blueprint-blue table. Surfaces get lighter the higher they float.
 * The diagram stays on a white sheet so it looks the way it will export;
 * primary actions are paper-white, and amber only marks AI changes.
 */
.dark {
    /* Neutral greys: the canvas matches draw.io's own dark workspace */
    --canvas: #1b1d1e;
    --background: #1b1d1e;
    --foreground: #ececec;

    --card: #242627;
    --card-foreground: #ececec;
    --popover: #2a2c2d;
    --popover-foreground: #ececec;

    --primary: #ececec;
    --primary-foreground: #1b1d1e;
    --secondary: #2d2f30;
    --secondary-foreground: #ececec;
    --muted: #2d2f30;
    --muted-foreground: #a7a9aa;
    --faint: #8a8c8d;
    --accent: #353738;
    --accent-foreground: #ececec;
    --destructive: #f07167;

    --border: rgb(255 255 255 / 0.1);
    --input: rgb(255 255 255 / 0.16);
    --ring: #ececec;

    --marker: #f5b13d;
    --marker-soft: rgb(245 177 61 / 0.16);
    --marker-ink: #f7c46b;

    --surface-0: #242627;
    --surface-1: #202223;
    --surface-2: #2d2f30;
    --border-subtle: rgb(255 255 255 / 0.08);
    --border-default: rgb(255 255 255 / 0.13);
    --interactive-hover: #353738;
    --interactive-active: #3c3e3f;
    --success: #4fd18b;
    --success-muted: rgb(79 209 139 / 0.14);

    --shadow-float:
        0 0 0 1px rgb(255 255 255 / 0.07), 0 14px 34px -12px rgb(0 0 0 / 0.6);
    --shadow-pop:
        0 0 0 1px rgb(255 255 255 / 0.1), 0 22px 56px -14px rgb(0 0 0 / 0.7);
}

@layer base {
    * {
        @apply border-border outline-ring/50;
    }
    html {
        color-scheme: light;
    }
    html.dark {
        color-scheme: dark;
    }
    body {
        @apply bg-background text-foreground font-sans;
        font-size: 14px;
        line-height: 1.55;
        -webkit-font-smoothing: antialiased;
    }
    ::selection {
        background: var(--marker-soft);
        color: inherit;
    }
}

/* Fix for Radix ScrollArea viewport horizontal overflow */
[data-slot="scroll-area-viewport"] > div {
    display: block !important;
    width: 100% !important;
}

@layer utilities {
    .scrollbar-thin {
        scrollbar-width: thin;
        scrollbar-color: color-mix(in oklab, var(--foreground) 18%, transparent)
            transparent;
    }
    .scrollbar-thin::-webkit-scrollbar {
        width: 6px;
    }
    .scrollbar-thin::-webkit-scrollbar-track {
        background: transparent;
    }
    .scrollbar-thin::-webkit-scrollbar-thumb {
        background-color: color-mix(
            in oklab,
            var(--foreground) 18%,
            transparent
        );
        border-radius: 3px;
    }
    .scrollbar-thin::-webkit-scrollbar-thumb:hover {
        background-color: color-mix(
            in oklab,
            var(--foreground) 30%,
            transparent
        );
    }

    /* Diagram pictures always render as on paper, also in dark mode
       (draw.io SVGs use light-dark() colors) */
    .sheet-light {
        color-scheme: light;
    }
    .shadow-float {
        box-shadow: var(--shadow-float);
    }
    .shadow-pop {
        box-shadow: var(--shadow-pop);
    }
    /* Older names kept for components that still use them */
    .shadow-soft {
        box-shadow: var(--shadow-float);
    }
    .shadow-dialog {
        box-shadow: var(--shadow-pop);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(6px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes messageIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* The first prompt moves from the middle of the canvas into the panel */
@keyframes panelIn {
    from {
        opacity: 0;
        transform: translateX(12px) scale(0.985);
    }
    to {
        opacity: 1;
        transform: translateX(0) scale(1);
    }
}

@keyframes check-pop {
    0% {
        transform: scale(0.8);
        opacity: 0;
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.animate-fade-in {
    animation: fadeIn 0.25s var(--ease-out) forwards;
}
.animate-message-in {
    animation: messageIn 0.22s var(--ease-out) forwards;
}
.animate-panel-in {
    animation: panelIn 0.32s var(--ease-out) both;
}
.animate-check-pop {
    animation: check-pop 0.25s var(--ease-spring) forwards;
}

@media (prefers-reduced-motion: reduce) {
    .animate-fade-in,
    .animate-message-in,
    .animate-panel-in,
    .animate-check-pop {
        animation: none;
    }
}