/* ============================================
   THIBAUD HERMET — base.css
   Shared design tokens across all persona pages
   ============================================ */

:root {
  /* Neutral scale */
  --n-0: #ffffff;
  --n-50: #fafafa;
  --n-100: #f2f1ee;
  --n-200: #e4e2dc;
  --n-300: #cbc8c0;
  --n-500: #8a8678;
  --n-700: #4a473f;
  --n-800: #2b2924;
  --n-900: #17160f;
  --n-950: #0b0a07;

  /* Home / neutral accent */
  --accent-home: #b08d57; /* muted gold */
  --accent-home-soft: #d8c19a;

  /* Type scale */
  --text-hero: clamp(2.75rem, 6vw, 5.5rem);
  --text-3xl: clamp(2rem, 4vw, 3.25rem);
  --text-2xl: clamp(1.5rem, 2.4vw, 2.1rem);
  --text-xl: clamp(1.25rem, 1.6vw, 1.5rem);
  --text-lg: 1.125rem;
  --text-base: 1rem;
  --text-sm: 0.875rem;
  --text-xs: 0.75rem;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-24: 6rem;
  --space-32: 8rem;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);

  /* Default (dark, editorial) theme */
  --bg: var(--n-950);
  --surface: var(--n-900);
  --text: var(--n-50);
  --text-muted: var(--n-300);
  --border: var(--n-800);
  --accent: var(--accent-home);
  --accent-soft: var(--accent-home-soft);
  --font-display: "Fraunces", serif;
  --font-body: "General Sans", "Inter", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background 0.4s var(--ease), color 0.4s var(--ease);
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6);
  backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border-bottom: 1px solid var(--border);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text);
}

.nav__logo svg { flex-shrink: 0; color: var(--accent); }

@media (max-width: 480px) {
  .nav__logo span { display: none; }
}

.nav__links {
  display: flex;
  gap: var(--space-8);
  align-items: center;
  list-style: none;
}

.nav__links a {
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  transition: color 0.25s var(--ease);
  position: relative;
}

.nav__links a:hover,
.nav__links a.active { color: var(--text); }

.nav__toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.5rem;
  cursor: pointer;
}

@media (max-width: 720px) {
  .nav__links {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    height: calc(100vh - 64px);
    flex-direction: column;
    justify-content: flex-start;
    padding-top: var(--space-16);
    gap: var(--space-8);
    background: var(--bg);
    transform: translateY(-120%);
    transition: transform 0.4s var(--ease);
    z-index: 49;
  }
  .nav__links.open { transform: translateY(0); }
  .nav__toggle { display: block; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
  border: 1px solid var(--accent);
  transition: transform 0.25s var(--ease), background 0.25s var(--ease), color 0.25s var(--ease);
  cursor: pointer;
}

.btn--solid {
  background: var(--accent);
  color: var(--bg);
}
.btn--solid:hover { transform: translateY(-2px); filter: brightness(1.08); }

.btn--outline {
  background: transparent;
  color: var(--text);
}
.btn--outline:hover {
  background: var(--accent);
  color: var(--bg);
  transform: translateY(-2px);
}

/* ---------- Persona cards (home) ---------- */
.persona-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

@media (max-width: 880px) {
  .persona-grid { grid-template-columns: 1fr; }
}

.persona-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 3 / 4;
  border: 1px solid var(--border);
  display: flex;
  align-items: flex-end;
  isolation: isolate;
  transition: transform 0.45s var(--ease), box-shadow 0.45s var(--ease);
}

.persona-card:hover { transform: translateY(-8px); }

.persona-card__bg {
  position: absolute;
  inset: 0;
  object-fit: cover;
  z-index: -2;
  transition: transform 0.6s var(--ease);
}
.persona-card:hover .persona-card__bg { transform: scale(1.06); }

.persona-card__scrim {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(to top, rgba(0,0,0,0.85) 10%, rgba(0,0,0,0.15) 60%, transparent 100%);
}

.persona-card__body {
  padding: var(--space-8);
  color: #fff;
}

.persona-card__eyebrow {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  opacity: 0.75;
  margin-bottom: var(--space-2);
}

.persona-card__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  margin-bottom: var(--space-2);
}

.persona-card__desc {
  font-size: var(--text-sm);
  opacity: 0.85;
  max-width: 32ch;
}

/* ---------- Footer / social hub ---------- */
.footer {
  border-top: 1px solid var(--border);
  padding: var(--space-16) 0 var(--space-12);
  margin-top: var(--space-24);
}

.footer__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-8);
}

.footer__col h4 {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: var(--space-4);
}

.footer__col a {
  display: block;
  font-size: var(--text-sm);
  color: var(--text);
  padding: var(--space-1) 0;
  opacity: 0.85;
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease);
}
.footer__col a:hover { opacity: 1; transform: translateX(3px); }

.footer__bottom {
  margin-top: var(--space-16);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
  font-size: var(--text-xs);
  color: var(--text-muted);
}

/* ---------- Utility ---------- */
.eyebrow {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: var(--space-4);
  display: inline-block;
}

.section { padding: var(--space-24) 0; }
.section--tight { padding: var(--space-16) 0; }

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

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