@import "tailwindcss";
@import "tw-animate-css";
@import "shadcn/tailwind.css";

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

@theme inline {
    --color-background: var(--background);
    --color-foreground: var(--foreground);
    --font-sans: var(--font-sans);
    --font-mono: var(--font-geist-mono);
    --font-heading: var(--font-sans);
    --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) * 0.6);
    --radius-md: calc(var(--radius) * 0.8);
    --radius-lg: var(--radius);
    --radius-xl: calc(var(--radius) * 1.4);
    --radius-2xl: calc(var(--radius) * 1.8);
    --radius-3xl: calc(var(--radius) * 2.2);
    --radius-4xl: calc(var(--radius) * 2.6);
}

/* ── Light mode — "Aged Parchment" ── */
:root {
    --background: oklch(0.957 0.012 79.8);
    --foreground: oklch(0.307 0.034 54.8);
    --card: oklch(0.974 0.01 81.8);
    --card-foreground: oklch(0.307 0.034 54.8);
    --popover: oklch(0.974 0.01 81.8);
    --popover-foreground: oklch(0.307 0.034 54.8);
    --primary: oklch(0.652 0.132 81.6);
    --primary-foreground: oklch(0.994 0.008 91.5);
    --secondary: oklch(0.899 0.03 80.7);
    --secondary-foreground: oklch(0.307 0.034 54.8);
    --muted: oklch(0.922 0.023 82.1);
    --muted-foreground: oklch(0.571 0.053 72.7);
    --accent: oklch(0.922 0.023 82.1);
    --accent-foreground: oklch(0.307 0.034 54.8);
    --destructive: oklch(0.577 0.245 27.325);
    --border: oklch(0.862 0.035 82.9);
    --input: oklch(0.862 0.035 82.9);
    --ring: oklch(0.729 0.089 81.2);
    --chart-1: oklch(0.652 0.132 81.6);
    --chart-2: oklch(0.571 0.053 72.7);
    --chart-3: oklch(0.729 0.089 81.2);
    --chart-4: oklch(0.44 0.04 60);
    --chart-5: oklch(0.307 0.034 54.8);
    --radius: 0.625rem;
    --sidebar: oklch(0.974 0.01 81.8);
    --sidebar-foreground: oklch(0.307 0.034 54.8);
    --sidebar-primary: oklch(0.652 0.132 81.6);
    --sidebar-primary-foreground: oklch(0.994 0.008 91.5);
    --sidebar-accent: oklch(0.922 0.023 82.1);
    --sidebar-accent-foreground: oklch(0.307 0.034 54.8);
    --sidebar-border: oklch(0.862 0.035 82.9);
    --sidebar-ring: oklch(0.729 0.089 81.2);

    /* Reading settings defaults */
    --reading-font-size: 1rem;
    --reading-font-family: inherit;
    --reading-text-align: start;
}

/* ── Dark mode — "Ancient Manuscript" ── */
.dark {
    --background: oklch(0.197 0.013 55.5);
    --foreground: oklch(0.899 0.03 80.7);
    --card: oklch(0.246 0.021 86.3);
    --card-foreground: oklch(0.899 0.03 80.7);
    --popover: oklch(0.246 0.021 86.3);
    --popover-foreground: oklch(0.899 0.03 80.7);
    --primary: oklch(0.753 0.127 84.9);
    --primary-foreground: oklch(0.251 0.032 69.4);
    --secondary: oklch(0.288 0.021 82.6);
    --secondary-foreground: oklch(0.899 0.03 80.7);
    --muted: oklch(0.288 0.021 82.6);
    --muted-foreground: oklch(0.646 0.047 78.2);
    --accent: oklch(0.288 0.021 82.6);
    --accent-foreground: oklch(0.899 0.03 80.7);
    --destructive: oklch(0.704 0.191 22.216);
    --border: oklch(0.777 0.059 84.4 / 15%);
    --input: oklch(0.777 0.059 84.4 / 18%);
    --ring: oklch(0.636 0.08 86.9);
    --chart-1: oklch(0.753 0.127 84.9);
    --chart-2: oklch(0.646 0.047 78.2);
    --chart-3: oklch(0.636 0.08 86.9);
    --chart-4: oklch(0.45 0.04 75);
    --chart-5: oklch(0.288 0.021 82.6);
    --sidebar: oklch(0.246 0.021 86.3);
    --sidebar-foreground: oklch(0.899 0.03 80.7);
    --sidebar-primary: oklch(0.753 0.127 84.9);
    --sidebar-primary-foreground: oklch(0.899 0.03 80.7);
    --sidebar-accent: oklch(0.288 0.021 82.6);
    --sidebar-accent-foreground: oklch(0.899 0.03 80.7);
    --sidebar-border: oklch(0.777 0.059 84.4 / 15%);
    --sidebar-ring: oklch(0.636 0.08 86.9);
}

@layer base {
    * {
        @apply border-border outline-ring/50;
    }
    body {
        @apply bg-background text-foreground;
    }
    html {
        @apply font-sans;
    }
}

/* ── Reading settings — classes applied to <html> ── */

/* Serif font — only main content + sidebar */
.reading-serif main,
.reading-serif aside {
    font-family: Georgia, "Times New Roman", "Noto Serif", serif;
}

/*
 * Font size scaling — uses zoom on main + aside.
 * zoom is supported in all major browsers including iOS Safari (Apple invented it).
 * -webkit-text-size-adjust prevents iOS from auto-scaling text in landscape.
 */
.reading-fs-xs main,
.reading-fs-xs aside {
    zoom: 0.8;
    -webkit-text-size-adjust: 80%;
}
.reading-fs-sm main,
.reading-fs-sm aside {
    zoom: 0.9;
    -webkit-text-size-adjust: 90%;
}
.reading-fs-base main,
.reading-fs-base aside {
    zoom: 1;
    -webkit-text-size-adjust: 100%;
}
.reading-fs-lg main,
.reading-fs-lg aside {
    zoom: 1.12;
    -webkit-text-size-adjust: 112%;
}
.reading-fs-xl main,
.reading-fs-xl aside {
    zoom: 1.25;
    -webkit-text-size-adjust: 125%;
}
.reading-fs-2xl main,
.reading-fs-2xl aside {
    zoom: 1.4;
    -webkit-text-size-adjust: 140%;
}

/* Fallback for browsers that don't support zoom (Firefox < 126) */
@supports not (zoom: 1.1) {
    .reading-fs-xs main,
    .reading-fs-xs aside {
        transform: scale(0.8);
        transform-origin: top left;
        width: 125%;
    }
    .reading-fs-sm main,
    .reading-fs-sm aside {
        transform: scale(0.9);
        transform-origin: top left;
        width: 111.11%;
    }
    .reading-fs-base main,
    .reading-fs-base aside {
        transform: none;
        width: auto;
    }
    .reading-fs-lg main,
    .reading-fs-lg aside {
        transform: scale(1.12);
        transform-origin: top left;
        width: 89.28%;
    }
    .reading-fs-xl main,
    .reading-fs-xl aside {
        transform: scale(1.25);
        transform-origin: top left;
        width: 80%;
    }
    .reading-fs-2xl main,
    .reading-fs-2xl aside {
        transform: scale(1.4);
        transform-origin: top left;
        width: 71.43%;
    }
}

/* Justified text — only main content */
.reading-justified main {
    text-align: justify;
}