/* base.css — reset, tokens, primitives for The Botanical Blueprint */

/* ---------- Tokens ---------- */
:root {
  /* Fluid type scale */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);

  /* 4px spacing scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Radius — deliberately restrained, editorial, never pill-shaped UI */
  --radius-sm: 2px;
  --radius-md: 3px;
  --radius-lg: 4px;

  --transition-interactive: 200ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1220px;

  /* Typography families */
  --font-display: 'Zodiak', 'Iowan Old Style', Georgia, serif;
  --font-body: 'Satoshi', 'Work Sans', 'Helvetica Neue', system-ui, sans-serif;
}

/* ---------- Light (parchment) ---------- */
:root,
[data-theme='light'] {
  --color-bg: #f6f1e6;
  --color-surface: #fbf8f1;
  --color-surface-2: #ffffff;
  --color-surface-offset: #efe9db;
  --color-divider: #ded5c2;
  --color-border: #cfc4ad;

  --color-text: #26261f;
  --color-text-muted: #5f5f52;
  --color-text-faint: #6f6d5f;
  --color-text-inverse: #f8f5ec;

  --color-primary: #4a5a31; /* deep moss */
  --color-primary-hover: #35431f;
  --color-primary-soft: #e4e6d5;
  --color-olive: #7c8f4e;

  --color-accent: #6f5f96; /* lavender */
  --color-accent-soft: #e6e1f0;

  --logo-plate: transparent;
  --shadow-sm: 0 1px 2px rgba(38, 38, 31, 0.07);
  --shadow-md: 0 6px 20px rgba(38, 38, 31, 0.09);
  --shadow-lg: 0 18px 48px rgba(38, 38, 31, 0.16);
  color-scheme: light;
}

/* ---------- Dark (lantern-lit) ---------- */
[data-theme='dark'] {
  --color-bg: #16180f;
  --color-surface: #1c1f15;
  --color-surface-2: #22251a;
  --color-surface-offset: #262a1d;
  --color-divider: #333827;
  --color-border: #454b36;

  --color-text: #e8e3d3;
  --color-text-muted: #a8a795;
  --color-text-faint: #8f8f7e;
  --color-text-inverse: #16180f;

  --color-primary: #b3c47f;
  --color-primary-hover: #cbd99b;
  --color-primary-soft: #2b3120;
  --color-olive: #9fb26c;

  --color-accent: #b8a9dc;
  --color-accent-soft: #2e2a3b;

  /* The supplied logo is a fixed-ink artwork; in dark mode it sits on a
     printed parchment plate so its identity stays faithful and legible. */
  --logo-plate: #f4efe3;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 18px 48px rgba(0, 0, 0, 0.55);
  color-scheme: dark;
}

/* ---------- Reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--space-20) + var(--space-2));
}

body {
  min-height: 100dvh;
  line-height: 1.62;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

ul[role='list'],
ol[role='list'] {
  list-style: none;
}

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  text-wrap: balance;
  line-height: 1.14;
  font-weight: 400;
}

p,
li,
figcaption {
  text-wrap: pretty;
  max-width: 72ch;
}

a {
  color: inherit;
}

::selection {
  background: var(--color-primary-soft);
  color: var(--color-text);
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

button {
  cursor: pointer;
  background: none;
  border: none;
}

a,
button,
[role='button'],
input,
textarea,
select {
  transition:
    color var(--transition-interactive),
    background var(--transition-interactive),
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive),
    opacity var(--transition-interactive);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

[hidden] {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}