/* =========================================================================
   base.css — element defaults, layout primitives, typography, utilities
   ========================================================================= */

html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: var(--fs-300);
  color: var(--ink);
  background: var(--paper);
  font-feature-settings: "ss01", "cv11";
}

a { transition: color var(--d-2) var(--ease-out); }
a:hover { color: var(--accent); }

h1, h2, h3, h4, h5, h6 { font-family: var(--font-display); letter-spacing: var(--tracking-tight); font-weight: 600; }

h1 { font-size: clamp(2.4rem, 5vw + 1rem, var(--fs-1100)); line-height: var(--lh-tight); }
h2 { font-size: clamp(1.8rem, 3vw + 0.6rem, var(--fs-900)); line-height: var(--lh-snug); }
h3 { font-size: clamp(1.4rem, 1.6vw + 0.6rem, var(--fs-700)); }
h4 { font-size: var(--fs-600); }
h5 { font-size: var(--fs-500); }
h6 { font-size: var(--fs-400); }

p { color: var(--ink-2); max-width: 68ch; }
p.lead { font-size: var(--fs-500); color: var(--ink-3); max-width: 60ch; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-sans); font-size: var(--fs-100);
  letter-spacing: var(--tracking-mega); text-transform: uppercase;
  color: var(--accent); font-weight: 600;
}
.eyebrow::before {
  content: ""; width: 28px; height: 1px; background: currentColor; display: inline-block;
}

.text-grad {
  background: var(--grad-2);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.text-grad-gold {
  background: var(--grad-3);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* layout */
.container { max-width: var(--container); margin: 0 auto; padding-left: var(--gutter); padding-right: var(--gutter); }
.container-wide { max-width: 1480px; margin: 0 auto; padding-left: var(--gutter); padding-right: var(--gutter); }
.section { padding-block: clamp(4rem, 8vw, 8rem); position: relative; }
.section-tight { padding-block: clamp(3rem, 6vw, 5rem); }
.section-dark { background: var(--ink); color: var(--paper); }
.section-dark p { color: rgba(246,245,241,0.78); }

.grid { display: grid; gap: var(--s-6); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 900px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}
@media (min-width: 901px) and (max-width: 1180px) {
  .grid-4 { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .grid-3 { grid-template-columns: repeat(2, minmax(0,1fr)); }
}

.flex { display: flex; gap: var(--s-4); }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; gap: var(--s-4); }

/* buttons */
.btn {
  --btn-bg: var(--ink);
  --btn-fg: var(--paper);
  --btn-bd: var(--ink);
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.95rem 1.5rem;
  background: var(--btn-bg); color: var(--btn-fg);
  border: 1.5px solid var(--btn-bd);
  border-radius: var(--r-pill);
  font-weight: 600; font-size: var(--fs-300);
  letter-spacing: 0.01em;
  cursor: pointer; user-select: none;
  position: relative; overflow: hidden;
  transition: transform var(--d-2) var(--ease-out),
              box-shadow var(--d-2) var(--ease-out),
              background var(--d-2) var(--ease-out);
  isolation: isolate;
}
.btn::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(circle at var(--mx,50%) var(--my,50%),
              rgba(255,255,255,0.25) 0%, transparent 60%);
  opacity: 0; transition: opacity var(--d-2) var(--ease-out);
  z-index: -1;
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-3); }
.btn:hover::after { opacity: 1; }
.btn:active { transform: translateY(0); }
.btn svg { width: 18px; height: 18px; }

.btn-primary { --btn-bg: var(--accent); --btn-fg: #fff; --btn-bd: var(--accent); }
.btn-primary:hover { --btn-bg: var(--accent-3); --btn-bd: var(--accent-3); color: #fff; }
.btn-ghost { --btn-bg: transparent; --btn-fg: var(--ink); --btn-bd: var(--ink); }
.btn-ghost:hover { --btn-bg: var(--ink); --btn-fg: var(--paper); color: var(--paper); }
.btn-light { --btn-bg: var(--paper); --btn-fg: var(--ink); --btn-bd: var(--paper); }
.btn-light:hover { --btn-bg: var(--paper-3); }
.btn-link {
  display: inline-flex; align-items: center; gap: 0.5rem;
  color: var(--accent); font-weight: 600; position: relative;
  padding-bottom: 2px;
}
.btn-link::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 100%; height: 1.5px; background: currentColor;
  transform-origin: left; transform: scaleX(0);
  transition: transform var(--d-3) var(--ease-out);
}
.btn-link:hover::after { transform: scaleX(1); }
.btn-link .arrow { transition: transform var(--d-2) var(--ease-out); }
.btn-link:hover .arrow { transform: translateX(4px); }

/* tag / pill */
.tag {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.25rem 0.7rem;
  background: var(--tint-blue); color: var(--accent-3);
  font-size: var(--fs-100); font-weight: 600;
  letter-spacing: var(--tracking-wide); text-transform: uppercase;
  border-radius: var(--r-pill);
}
.tag-gold { background: var(--tint-gold); color: var(--gold); }

/* card */
.card {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--r-4);
  padding: var(--s-6);
  transition: transform var(--d-3) var(--ease-out),
              box-shadow var(--d-3) var(--ease-out),
              border-color var(--d-3) var(--ease-out);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-3);
  border-color: var(--accent);
}
.card-title { font-size: var(--fs-600); margin-bottom: var(--s-2); font-family: var(--font-display); }

/* icon bubble */
.icon-bubble {
  display: inline-flex; align-items: center; justify-content: center;
  width: 56px; height: 56px;
  border-radius: var(--r-3);
  background: var(--tint-blue); color: var(--accent);
  transition: transform var(--d-3) var(--ease-out),
              background var(--d-3) var(--ease-out);
}
.icon-bubble svg { width: 28px; height: 28px; stroke-width: 1.5; }
.card:hover .icon-bubble { transform: scale(1.06) rotate(-3deg); background: var(--accent); color: #fff; }

/* skip link */
.skip-link {
  position: absolute; top: -200px; left: 12px;
  background: var(--ink); color: var(--paper);
  padding: 0.75rem 1rem; border-radius: var(--r-2);
  z-index: var(--z-toast);
  transition: top var(--d-2) var(--ease-out);
}
.skip-link:focus { top: 12px; }

/* divider wave */
.divider-wave { display: block; width: 100%; height: 40px; }

/* image */
.media {
  position: relative; overflow: hidden; border-radius: var(--r-4);
  background: var(--paper-3);
  aspect-ratio: 16/9;
}
.media img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--d-5) var(--ease-out); }
.media:hover img { transform: scale(1.04); }
.media-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(11,11,16,0.7) 100%);
  pointer-events: none;
}

/* kv row */
.kv { display: grid; grid-template-columns: 180px 1fr; gap: var(--s-3) var(--s-5); }
.kv dt { color: var(--ink-3); font-weight: 600; }
.kv dd { color: var(--ink-2); }
@media (max-width: 700px) { .kv { grid-template-columns: 1fr; } }

/* sr only */
.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;
}