/* ============================================================
   Villandry Reserve — Fundação
   Tokens, reset, tipografia e primitivas de layout.
   ============================================================ */

/* ---------- 1. Tokens ---------- */
:root {
  /* Superfícies — paleta consolidada (docs/02 §2) */
  --vr-base:        #05130a;
  --vr-surface:     #0d2417;
  --vr-surface-alt: #16341f;

  /* Marca */
  --vr-green:       #a6c880;
  --vr-green-mid:   #57774a;
  --vr-gold:        #c9a961;

  /* Texto */
  --vr-text:        #f4f2ec;
  --vr-text-muted:  #b8c4ae;

  /* Tipografia */
  --font-display: "Cormorant Garamond", "Iowan Old Style", Palatino, Georgia, serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  /* Escala tipográfica fluida — clamp(min, preferido, max) */
  --step--1: clamp(0.83rem, 0.79rem + 0.18vw, 0.94rem);
  --step-0:  clamp(1rem, 0.95rem + 0.24vw, 1.13rem);
  --step-1:  clamp(1.2rem, 1.11rem + 0.44vw, 1.5rem);
  --step-2:  clamp(1.44rem, 1.29rem + 0.75vw, 2rem);
  --step-3:  clamp(1.73rem, 1.48rem + 1.24vw, 2.66rem);
  --step-4:  clamp(2.07rem, 1.68rem + 1.97vw, 3.55rem);
  --step-5:  clamp(2.49rem, 1.87rem + 3.09vw, 4.73rem);

  /* Ritmo espacial */
  --space-2xs: 0.5rem;
  --space-xs:  0.75rem;
  --space-s:   1rem;
  --space-m:   1.5rem;
  --space-l:   2.5rem;
  --space-xl:  4rem;
  --space-2xl: 6rem;
  --space-3xl: clamp(5rem, 10vw, 9rem);

  /* Medidas */
  --measure: 65ch;
  --wrap: 1240px;
  --wrap-narrow: 820px;

  /* Movimento — lento e contido (docs/02 §6.4) */
  --ease-out: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur-fast: 220ms;
  --dur:      420ms;
  --dur-slow: 720ms;

  --header-h: 76px;
}

/* ---------- 2. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 1rem);
  /* O menu mobile fechado fica deslocado 100% à direita (motion.css §8).
     Como ele é `position: fixed`, conter a rolagem precisa acontecer aqui,
     na raiz — no `body` não teria efeito sobre elementos fixos. */
  overflow-x: clip;
}

body {
  margin: 0;
  background: var(--vr-base);
  color: var(--vr-text);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.65;
  font-weight: 350;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  /* O menu mobile fechado fica deslocado 100% à direita (motion.css §8),
     o que geraria rolagem horizontal. `clip` corta sem criar contexto de
     scroll — ao contrário de `hidden`, não quebra `position: sticky`. */
  overflow-x: clip;
}

h1, h2, h3, h4, p, figure, blockquote, dl, dd { margin: 0; }
ul[class], ol[class] { list-style: none; margin: 0; padding: 0; }

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

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

/* ---------- 3. Tipografia ---------- */
h1, h2, h3, .display {
  font-family: var(--font-display);
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: -0.015em;
  text-wrap: balance;
}

h1 { font-size: var(--step-5); }
h2 { font-size: var(--step-4); }
h3 { font-size: var(--step-2); }

p { text-wrap: pretty; }
p + p { margin-top: 1em; }

a {
  color: var(--vr-green);
  text-decoration-color: color-mix(in srgb, var(--vr-green) 40%, transparent);
  text-underline-offset: 0.22em;
  transition: color var(--dur-fast) var(--ease-out),
              text-decoration-color var(--dur-fast) var(--ease-out);
}
a:hover { color: var(--vr-text); text-decoration-color: currentColor; }

strong { font-weight: 600; color: var(--vr-text); }

/* Olho / lead */
.lead {
  font-size: var(--step-1);
  color: var(--vr-text-muted);
  font-weight: 300;
  line-height: 1.55;
}

/* Antetítulo — small caps com tracking largo */
.eyebrow {
  font-size: var(--step--1);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--vr-green);
  font-weight: 500;
  margin-bottom: var(--space-s);
  display: block;
}

/* Filete ornamental */
.rule {
  width: 68px;
  height: 1px;
  background: linear-gradient(90deg, var(--vr-gold), transparent);
  border: 0;
  margin: var(--space-m) 0;
}
.rule--center { margin-inline: auto; background: linear-gradient(90deg, transparent, var(--vr-gold), transparent); }

/* ---------- 4. Layout ---------- */
.wrap {
  width: min(100% - 2.5rem, var(--wrap));
  margin-inline: auto;
}
@media (min-width: 48em) {
  .wrap { width: min(100% - 5rem, var(--wrap)); }
}

.wrap--narrow { max-width: var(--wrap-narrow); }

.section { padding-block: var(--space-3xl); }
.section--tight { padding-block: var(--space-xl); }

.stack > * + * { margin-top: var(--space-s); }
.stack-l > * + * { margin-top: var(--space-l); }

.grid { display: grid; gap: var(--space-m); }

/* Duas colunas editoriais, empilham no mobile */
.split {
  display: grid;
  gap: var(--space-l);
  align-items: center;
}
@media (min-width: 56em) {
  .split { grid-template-columns: 1fr 1fr; gap: var(--space-2xl); }
  .split--reverse > :first-child { order: 2; }
}

.text-center { text-align: center; }
.measure { max-width: var(--measure); }
.measure-center { max-width: var(--measure); margin-inline: auto; }

/* ---------- 5. Superfícies ---------- */
.surface {
  background: var(--vr-surface);
  border: 1px solid color-mix(in srgb, var(--vr-green-mid) 30%, transparent);
  border-radius: 2px;
}

/* ---------- 6. Botões ---------- */
.btn {
  --btn-bg: transparent;
  --btn-fg: var(--vr-text);
  --btn-bd: color-mix(in srgb, var(--vr-text) 45%, transparent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6em;
  padding: 0.95em 2em;
  background: var(--btn-bg);
  color: var(--btn-fg);
  border: 1px solid var(--btn-bd);
  border-radius: 2px;
  font-size: var(--step--1);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  text-align: center;
  transition: background var(--dur) var(--ease-out),
              color var(--dur) var(--ease-out),
              border-color var(--dur) var(--ease-out),
              transform var(--dur-fast) var(--ease-out);
}
.btn:hover {
  background: var(--vr-text);
  color: var(--vr-base);
  border-color: var(--vr-text);
  transform: translateY(-2px);
}

/* Primário — verde da marca com texto escuro (contraste WCAG, docs/02 §2) */
.btn--primary {
  --btn-bg: var(--vr-green);
  --btn-fg: var(--vr-base);
  --btn-bd: var(--vr-green);
  font-weight: 600;
}
.btn--primary:hover {
  background: color-mix(in srgb, var(--vr-green) 82%, white);
  border-color: color-mix(in srgb, var(--vr-green) 82%, white);
  color: var(--vr-base);
}

.btn--gold {
  --btn-bg: transparent;
  --btn-fg: var(--vr-gold);
  --btn-bd: color-mix(in srgb, var(--vr-gold) 60%, transparent);
}
.btn--gold:hover { background: var(--vr-gold); color: var(--vr-base); border-color: var(--vr-gold); }

/* ---------- 7. Acessibilidade ---------- */
:where(a, button, input, textarea, select, [tabindex]):focus-visible {
  outline: 2px solid var(--vr-green);
  outline-offset: 3px;
  border-radius: 2px;
}

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

.skip-link {
  position: absolute;
  top: 0; left: 50%;
  transform: translate(-50%, -110%);
  z-index: 200;
  padding: 0.75rem 1.5rem;
  background: var(--vr-green);
  color: var(--vr-base);
  font-weight: 600;
  text-decoration: none;
  transition: transform var(--dur-fast) var(--ease-out);
}
.skip-link:focus { transform: translate(-50%, 0); }

/* ---------- 8. Movimento reduzido ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}