src/app/globals.css

@import 'tailwindcss';
@import 'tw-animate-css';

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

@theme inline {
    --color-background: var(--background);
    --color-foreground: var(--foreground);
    --font-sans: var(--font-geist-sans);
    --font-mono: var(--font-geist-mono);
    --color-sidebar-ring: var(--sidebar-ring);
    --color-sidebar-border: var(--sidebar-border);
    --color-sidebar-accent-foreground: var(--sidebar-accent-foreground);
    --color-sidebar-accent: var(--sidebar-accent);
    --color-sidebar-primary-foreground: var(--sidebar-primary-foreground);
    --color-sidebar-primary: var(--sidebar-primary);
    --color-sidebar-foreground: var(--sidebar-foreground);
    --color-sidebar: var(--sidebar);
    --color-chart-5: var(--chart-5);
    --color-chart-4: var(--chart-4);
    --color-chart-3: var(--chart-3);
    --color-chart-2: var(--chart-2);
    --color-chart-1: var(--chart-1);
    --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);
}

:root {
    color-scheme: light;
    --font-geist-sans: Arial, Helvetica, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    --font-geist-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    --radius: 0.5rem;
    --background: oklch(0.975 0.004 250);
    --foreground: oklch(0.255 0.018 255);
    --card: oklch(1 0 0);
    --card-foreground: oklch(0.255 0.018 255);
    --popover: oklch(0.998 0.002 250);
    --popover-foreground: oklch(0.255 0.018 255);
    --primary: oklch(0.585 0.185 27);
    --primary-foreground: oklch(0.99 0.002 250);
    --secondary: oklch(0.935 0.012 235);
    --secondary-foreground: oklch(0.31 0.022 250);
    --muted: oklch(0.95 0.007 250);
    --muted-foreground: oklch(0.51 0.018 255);
    --accent: oklch(0.925 0.017 220);
    --accent-foreground: oklch(0.29 0.025 245);
    --destructive: oklch(0.57 0.21 27);
    --border: oklch(0.885 0.009 250);
    --input: oklch(0.85 0.01 250);
    --ring: oklch(0.585 0.185 27);
    --workspace-canvas: #f7f8fa;
    --chart-1: oklch(0.646 0.222 41.116);
    --chart-2: oklch(0.6 0.118 184.704);
    --chart-3: oklch(0.398 0.07 227.392);
    --chart-4: oklch(0.828 0.189 84.429);
    --chart-5: oklch(0.769 0.188 70.08);
    --sidebar: oklch(0.985 0.003 250);
    --sidebar-foreground: oklch(0.255 0.018 255);
    --sidebar-primary: oklch(0.585 0.185 27);
    --sidebar-primary-foreground: oklch(0.99 0.002 250);
    --sidebar-accent: oklch(0.925 0.017 220);
    --sidebar-accent-foreground: oklch(0.29 0.025 245);
    --sidebar-border: oklch(0.885 0.009 250);
    --sidebar-ring: oklch(0.585 0.185 27);
}

.dark {
    color-scheme: dark;
    --background: oklch(0.18 0.014 255);
    --foreground: oklch(0.925 0.008 250);
    --card: oklch(0.225 0.016 255);
    --card-foreground: oklch(0.925 0.008 250);
    --popover: oklch(0.225 0.016 255);
    --popover-foreground: oklch(0.925 0.008 250);
    --primary: oklch(0.7 0.16 27);
    --primary-foreground: oklch(0.2 0.014 255);
    --secondary: oklch(0.29 0.018 250);
    --secondary-foreground: oklch(0.89 0.009 250);
    --muted: oklch(0.275 0.015 255);
    --muted-foreground: oklch(0.7 0.015 250);
    --accent: oklch(0.34 0.03 225);
    --accent-foreground: oklch(0.925 0.008 250);
    --destructive: oklch(0.7 0.19 27);
    --border: oklch(0.43 0.018 250 / 60%);
    --input: oklch(0.5 0.018 250 / 65%);
    --ring: oklch(0.7 0.16 27);
    --workspace-canvas: #20252c;
    --chart-1: oklch(0.488 0.243 264.376);
    --chart-2: oklch(0.696 0.17 162.48);
    --chart-3: oklch(0.769 0.188 70.08);
    --chart-4: oklch(0.627 0.265 303.9);
    --chart-5: oklch(0.645 0.246 16.439);
    --sidebar: oklch(0.225 0.016 255);
    --sidebar-foreground: oklch(0.925 0.008 250);
    --sidebar-primary: oklch(0.7 0.16 27);
    --sidebar-primary-foreground: oklch(0.2 0.014 255);
    --sidebar-accent: oklch(0.34 0.03 225);
    --sidebar-accent-foreground: oklch(0.925 0.008 250);
    --sidebar-border: oklch(0.43 0.018 250 / 60%);
    --sidebar-ring: oklch(0.7 0.16 27);
}

@layer base {
    * {
        @apply border-border outline-ring/50;
    }
    html {
        font-variant-numeric: tabular-nums;
        text-rendering: optimizeLegibility;
    }
    h1,
    h2,
    h3 {
        text-wrap: balance;
    }
    p,
    li,
    figcaption,
    button,
    label {
        text-wrap: pretty;
    }
    body {
        @apply bg-background text-foreground;
        min-height: 100%;
    }
}

@layer utilities {
    .studio-paper {
        background: var(--background);
    }

    .paper-soft-shadow {
        box-shadow: 0 10px 26px rgb(15 23 42 / 8%);
    }

    .touch-target {
        min-width: 2.75rem;
        min-height: 2.75rem;
    }

    @media (min-width: 1024px) {
        .touch-target {
            min-width: 2.25rem;
            min-height: 2.25rem;
        }
    }

    .ui-stat {
        font-variant-numeric: tabular-nums;
    }

    .image-edge {
        outline: 1px solid rgb(0 0 0 / 10%);
        outline-offset: -1px;
    }

    .dark .image-edge {
        outline-color: rgb(255 255 255 / 10%);
    }

    .literary-scrollbar {
        scrollbar-color: oklch(0.66 0.013 250 / 0.6) transparent;
        scrollbar-width: thin;
    }

    .literary-scrollbar::-webkit-scrollbar {
        width: 8px;
        height: 8px;
    }

    .literary-scrollbar::-webkit-scrollbar-track {
        background: transparent;
    }

    .literary-scrollbar::-webkit-scrollbar-thumb {
        border: 2px solid transparent;
        border-radius: 999px;
        background-clip: content-box;
        background-color: oklch(0.66 0.013 250 / 0.6);
    }

    .scrollbar-none {
        scrollbar-width: none;
    }

    .scrollbar-none::-webkit-scrollbar {
        display: none;
    }

    .editorial-title {
        font-family: inherit;
        letter-spacing: 0;
    }

    .workbench-panel {
        background: var(--card);
        box-shadow:
            0 1px 2px rgb(15 23 42 / 4%),
            0 8px 22px rgb(15 23 42 / 5%);
    }

    .photo-paper {
        min-width: 0;
        border: 1px solid var(--border);
        border-radius: 0.5rem;
        background: var(--card);
        box-shadow:
            0 1px 2px rgb(15 23 42 / 6%),
            0 10px 26px rgb(15 23 42 / 7%);
    }

    .photo-paper::before {
        content: none;
    }

    .preview-gallery-board {
        background: var(--workspace-canvas);
    }

    .preview-gallery-board::before {
        content: none;
    }

    /* Tailwind v4 does not emit this arbitrary breakpoint reliably in the current build. */
    @media (min-width: 1160px) {
        .workbench-layout {
            min-height: 0;
            grid-template-columns: minmax(320px, 340px) minmax(0, 1fr) minmax(220px, 244px);
        }

        .workbench-history-column {
            min-height: 0;
            grid-column: span 1 / span 1;
        }

        .workbench-history-column--contained {
            overflow: hidden;
        }
    }

    @media (min-width: 1280px) {
        .workbench-layout {
            grid-template-columns: minmax(320px, 360px) minmax(0, 1fr) minmax(232px, 272px);
        }
    }

    @media (min-width: 1536px) {
        .workbench-layout {
            grid-template-columns: minmax(380px, 424px) minmax(780px, 1fr) minmax(272px, 304px);
        }
    }

    @media (max-width: 1023px) and (max-height: 480px) {
        #mobile-creation-sheet {
            overflow-y: auto;
            overscroll-behavior-y: contain;
        }

        #mobile-creation-sheet .mobile-creation-sheet-handle {
            position: sticky;
            top: 0;
            background: var(--card);
        }

        #mobile-creation-sheet .mobile-drawer-form-slot,
        #mobile-creation-sheet .mobile-drawer-form-card,
        #mobile-creation-sheet .mobile-drawer-form-frame,
        #mobile-creation-sheet .mobile-drawer-form-content {
            min-height: auto;
            flex: none;
            overflow: visible;
        }
    }
}