/* ============================================================
   base.css — Reset, base elements, typography, global utilities
   ============================================================ */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.75;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-base), color var(--transition-base);
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }

a { color: inherit; text-decoration: none; }

button {
  font-family: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

address { font-style: normal; }

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

::selection {
  background: var(--color-gold);
  color: var(--bg-dark);
}

/* ---- Headings default to display face ---- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.1;
}

/* ---- Typography scale ---- */
.text-display {
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.02em;
}
.text-h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 400;
  line-height: 1.1;
}
.text-h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 400;
  line-height: 1.2;
}
.text-h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 500;
}
.text-body { font-family: var(--font-body); font-size: 1rem; line-height: 1.75; }
.text-sm    { font-family: var(--font-body); font-size: 0.875rem; line-height: 1.6; }
.text-label {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.text-mono { font-family: var(--font-mono); font-size: 0.875rem; letter-spacing: 0; }

.text-emphasis {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.375rem;
  line-height: 1.4;
  color: var(--text-primary);
}

/* ---- Layout helpers ---- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 2.5rem);
}

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

.section-label {
  display: inline-block;
  color: var(--color-gold);
  margin-bottom: 1.75rem;
}

.measure { max-width: var(--text-max); }

/* ---- Bilingual visibility ---- */
[data-fr], [data-en] { display: none; }
[data-lang="fr"] [data-fr] { display: revert; }
[data-lang="en"] [data-en] { display: revert; }

/* ---- Scroll reveal (cinematic) ---- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 600ms ease, transform 600ms ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-group > *:nth-child(1) { transition-delay: 0ms; }
.reveal-group > *:nth-child(2) { transition-delay: 80ms; }
.reveal-group > *:nth-child(3) { transition-delay: 160ms; }
.reveal-group > *:nth-child(4) { transition-delay: 240ms; }

.reveal-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 700ms cubic-bezier(0.16, 1, 0.3, 1),
              transform 700ms cubic-bezier(0.16, 1, 0.3, 1);
  transition-delay: var(--delay, 0ms);
}
.reveal-up.visible { opacity: 1; transform: translateY(0); }

.reveal-left {
  opacity: 0;
  transform: translateX(-24px);
  transition: opacity 600ms ease, transform 600ms ease;
  transition-delay: var(--delay, 0ms);
}
.reveal-left.visible { opacity: 1; transform: translateX(0); }

.reveal-right {
  opacity: 0;
  transform: translateX(24px);
  transition: opacity 600ms ease, transform 600ms ease;
  transition-delay: var(--delay, 0ms);
}
.reveal-right.visible { opacity: 1; transform: translateX(0); }

/* Stagger groups via --delay custom property */
.stagger > *:nth-child(1) { --delay: 0ms; }
.stagger > *:nth-child(2) { --delay: 100ms; }
.stagger > *:nth-child(3) { --delay: 200ms; }
.stagger > *:nth-child(4) { --delay: 300ms; }

@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal-up, .reveal-left, .reveal-right {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

/* ---- Accessibility ---- */
.sr-only {
  position: absolute;
  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;
  left: 1rem; top: -3rem;
  z-index: 10000;
  padding: 0.6rem 1rem;
  background: var(--color-coffee);
  color: var(--text-inverse);
  font-size: 0.875rem;
  transition: top var(--transition-fast);
}
.skip-link:focus { top: 1rem; }