/* Reusable components: nav, buttons, panels, metrics, steps. */

/* ---------- Nav ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-h);
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}

.nav__inner {
  max-width: var(--max-w);
  height: 100%;
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav__brand {
  display: flex;
  align-items: center;
}

.nav__lockup {
  height: 26px;
  width: auto;
}

.nav__links {
  display: flex;
  gap: 24px;
  margin-left: auto;
}

.nav__links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--t-fast);
}

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

.nav__build {
  color: var(--text-faint);
}

@media (max-width: 640px) {
  .nav__build { display: none; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  height: 44px;
  padding: 0 22px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color var(--t-fast), border-color var(--t-fast),
              color var(--t-fast), transform var(--t-fast);
}

.btn:active { transform: translateY(1px); }

.btn--primary {
  background: var(--accent);
  color: var(--accent-ink);
}

.btn--primary:hover { background: var(--accent-bright); }

.btn--ghost {
  border-color: var(--line-strong);
  color: var(--text);
}

.btn--ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ---------- Panel (shared frame for schematic + viz) ---------- */
.panel {
  background: var(--surface);
  border: 1px solid var(--line);
}

.panel__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
}

.panel__title { color: var(--text-muted); }

.panel__tag {
  color: var(--accent);
  border: 1px solid var(--line-strong);
  padding: 2px 6px;
}

.panel__bar-end {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.panel__toggle {
  background: transparent;
  border: 1px solid var(--line-strong);
  color: var(--text-muted);
  padding: 3px 8px;
  cursor: pointer;
  transition: color var(--t-fast), border-color var(--t-fast);
}

.panel__toggle:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.panel__toggle[aria-pressed="true"] {
  color: var(--accent-2);
  border-color: var(--accent-2);
}

.panel__status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-faint);
}

.panel__status .dot {
  width: 6px;
  height: 6px;
  background: var(--accent);
}

.panel__foot {
  display: block;
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  color: var(--text-faint);
  letter-spacing: 0.04em;
}

/* ---------- Metric ---------- */
.metric dt {
  color: var(--text-faint);
  margin-bottom: 4px;
}

.metric dd {
  font-size: 34px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}

.metric__unit {
  font-size: 15px;
  font-weight: 500;
  color: var(--accent);
  margin-left: 4px;
}

/* ---------- Eyebrow / section heads ---------- */
.eyebrow {
  color: var(--accent);
  margin-bottom: 18px;
}

.section-head {
  max-width: var(--max-w);
  margin: 0 auto 40px;
  padding: 0 var(--gutter);
}

.section-head__sub {
  margin-top: 12px;
  max-width: 640px;
  font-size: 16px;
}

/* ---------- Pipeline step ---------- */
.step {
  background: var(--surface);
  border: 1px solid var(--line);
  padding: 22px;
  transition: border-color var(--t-fast), transform var(--t-base);
}

.step:hover {
  border-color: var(--line-strong);
  transform: translateY(-2px);
}

.step__index {
  display: block;
  color: var(--accent);
  margin-bottom: 14px;
}

.step h3 { margin-bottom: 8px; }

.step p { font-size: 14px; }

/* ---------- Softened corners ----------
   Gentle rounding across the UI chrome so the layout reads less like a
   wireframe. Data marks inside the canvas stay sharp on purpose. */
.panel,
.step,
.specs__table,
.legal__doc,
.legal__body,
.upload__drop,
.upload__file,
.upload__result,
.pose__stage,
.pose__card,
.viz__stage {
  border-radius: var(--radius);
}

/* Panels clip their inner bars/footers to the rounded outline. */
.panel { overflow: hidden; box-shadow: var(--shadow); }

.step,
.legal__doc { box-shadow: var(--shadow); }

/* Warmer, less machine-like: decorative labels use the sans face, not mono.
   Numeric readouts and legal/data text stay monospaced. */
.panel__title,
.panel__foot,
.eyebrow,
.footer__line {
  font-family: var(--font-sans);
  text-transform: none;
  letter-spacing: 0.01em;
}

.panel__tag,
.panel__toggle,
.upload__progress,
.pose__legend,
.pose__counter {
  border-radius: var(--radius-sm);
}

.btn { border-radius: 999px; }