/* ==========================================================================
   TogNinja — Components: nav, buttons, cards, chips
   ========================================================================== */

/* --- Header / nav --------------------------------------------------------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: var(--tn-z-nav);
  transition: background var(--tn-dur-med) var(--tn-ease),
              border-color var(--tn-dur-med) var(--tn-ease),
              backdrop-filter var(--tn-dur-med) var(--tn-ease);
  border-bottom: 1px solid transparent;
}
.site-header.is-stuck {
  background: color-mix(in srgb, var(--tn-bg) 82%, transparent);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--tn-line-soft);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--tn-s5);
  height: 4.5rem;
}

/* Wordmark — the official reverse-out artwork, split into mark + wordmark so
   the stacked lockup can be laid out horizontally for the nav bar.
   Sized in em against .wordmark's font-size, so one value scales the pair.
   width/height attributes are on the <img> tags to reserve space (no CLS). */
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-size: 1.15rem;
  line-height: 1;
  white-space: nowrap;
}
.wordmark__mark {
  height: 2.05em;
  width: auto;
  flex: none;
  transition: transform var(--tn-dur-slow) var(--tn-ease),
              opacity var(--tn-dur-fast) var(--tn-ease);
}
.wordmark__type {
  height: 1.1em;
  width: auto;
  flex: none;
  transition: opacity var(--tn-dur-fast) var(--tn-ease);
}

/* One deliberate flourish: the iris turns on hover. */
a.wordmark:hover .wordmark__mark { transform: rotate(60deg); }
a.wordmark:hover .wordmark__type { opacity: 0.75; }

.wordmark--lg { font-size: 1.5rem; }

@media (prefers-reduced-motion: reduce) {
  a.wordmark:hover .wordmark__mark { transform: none; }
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--tn-s6);
  font-size: var(--tn-fs-small);
  color: var(--tn-muted);
}
.nav__links a:hover { color: var(--tn-text); }

.nav__actions { display: flex; align-items: center; gap: var(--tn-s3); }

@media (max-width: 880px) {
  .nav__links { display: none; }
}
@media (max-width: 520px) {
  .nav__actions .btn--ghost { display: none; }
}

/* --- Buttons -------------------------------------------------------------- */
.btn {
  --btn-bg: transparent;
  --btn-fg: var(--tn-text);
  --btn-bd: var(--tn-line-loud);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--tn-s3);
  padding: 0.8em 1.5em;
  border-radius: var(--tn-r-pill);
  border: 1px solid var(--btn-bd);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-size: var(--tn-fs-small);
  font-weight: 600;
  letter-spacing: -0.01em;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  transition: transform var(--tn-dur-fast) var(--tn-ease),
              border-color var(--tn-dur-fast) var(--tn-ease),
              background var(--tn-dur-fast) var(--tn-ease),
              box-shadow var(--tn-dur-med) var(--tn-ease);
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  --btn-bg: var(--tn-teal);
  --btn-fg: #05231f;
  --btn-bd: transparent;
  box-shadow: 0 8px 30px -10px var(--tn-glow-teal);
}
.btn--primary:hover {
  box-shadow: 0 14px 44px -12px rgba(67, 214, 207, 0.45);
}

.btn--ghost:hover { --btn-bd: var(--tn-teal); background: rgba(67, 214, 207, 0.06); }

.btn--lg { padding: 1em 2em; font-size: var(--tn-fs-body); }

.btn__arrow { transition: transform var(--tn-dur-med) var(--tn-ease); }
.btn:hover .btn__arrow { transform: translateX(3px); }

/* --- Surface card --------------------------------------------------------- */
.card {
  position: relative;
  padding: var(--tn-s6);
  border-radius: var(--tn-r-lg);
  border: 1px solid var(--tn-line);
  background:
    linear-gradient(180deg, rgba(255,255,255,0.028), transparent 45%),
    var(--tn-surface);
  transition: border-color var(--tn-dur-med) var(--tn-ease),
              transform var(--tn-dur-med) var(--tn-ease),
              background var(--tn-dur-med) var(--tn-ease);
}
.card:hover {
  border-color: var(--tn-line-loud);
  transform: translateY(-3px);
}

.card__icon {
  width: 2.5rem; height: 2.5rem;
  display: grid; place-items: center;
  border-radius: var(--tn-r-md);
  border: 1px solid var(--tn-line);
  background: var(--tn-surface-2);
  color: var(--tn-teal);
  margin-bottom: var(--tn-s5);
}
.card__title { font-size: 1.0625rem; font-weight: 600; margin-bottom: var(--tn-s2); }
.card__body { font-size: var(--tn-fs-small); color: var(--tn-muted); line-height: 1.6; }

/* --- Chip ----------------------------------------------------------------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--tn-s2);
  padding: 0.45em 0.9em;
  border-radius: var(--tn-r-pill);
  border: 1px solid var(--tn-line);
  background: var(--tn-surface);
  font-size: var(--tn-fs-small);
  color: var(--tn-muted);
  transition: border-color var(--tn-dur-fast) var(--tn-ease),
              color var(--tn-dur-fast) var(--tn-ease);
}
.chip:hover { border-color: var(--tn-line-loud); color: var(--tn-text); }

.chip--live {
  border-color: rgba(114, 216, 154, 0.35);
  color: var(--tn-text);
  background: rgba(114, 216, 154, 0.06);
}
.chip__pip {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--tn-success);
  box-shadow: 0 0 0 0 rgba(114, 216, 154, 0.6);
  animation: tn-pip 2.4s var(--tn-ease-io) infinite;
}

/* --- Divider glow --------------------------------------------------------- */
.rule {
  height: 1px;
  border: 0;
  margin: 0;
  background: linear-gradient(90deg, transparent, var(--tn-line-loud) 20%, var(--tn-line-loud) 80%, transparent);
}