/* ============================================================
   COMPONENTS — Header, Nav, Buttons, Cards, Floating Actions
   ============================================================ */

/* ── Header ───────────────────────────────────────────────── */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 24px;
  background: var(--nav-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--nav-border);
  transition: transform var(--duration-base) var(--ease-out);
}

.header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* ── Nav Logo ─────────────────────────────────────────────── */
.nav__logo {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.5px;
  text-decoration: none;
}

.nav__logo span {
  color: var(--accent);
}

/* ── Nav List ─────────────────────────────────────────────── */
.nav__list {
  display: flex;
  gap: 4px;
  list-style: none;
  position: relative;
}

/* ── Nav Link ─────────────────────────────────────────────── */
.nav__link {
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  transition: all var(--duration-fast) var(--ease-out);
  letter-spacing: 0.02em;
  text-decoration: none;
  display: block;
}

.nav__link:hover {
  color: var(--text);
  background: var(--nav-active);
}

.nav__link.is-active {
  color: var(--accent);
}

/* ── Nav Indicator ────────────────────────────────────────── */
.nav__indicator {
  position: absolute;
  bottom: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 1px;
  transition: all var(--duration-base) var(--ease-spring);
  pointer-events: none;
}

/* ── Nav Toggle ───────────────────────────────────────────── */
.nav__toggle {
  display: none;
  font-size: 24px;
  background: none;
  border: none;
  color: var(--text);
  cursor: pointer;
  padding: 4px;
  line-height: 1;
}

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--duration-base) var(--ease-out);
  position: relative;
  overflow: hidden;
  text-decoration: none;
  white-space: nowrap;
}

.btn--primary {
  background: linear-gradient(135deg, var(--accent), #818cf8);
  color: #fff;
  box-shadow: var(--glow);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--glow-strong);
}

.btn--ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}

.btn--ghost:hover {
  border-color: var(--border-hover);
  background: var(--nav-active);
}

/* ── Card (base) ──────────────────────────────────────────── */
.card {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: all var(--duration-base) var(--ease-out);
}

.card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--glow);
}

/* ── Signal Badge ─────────────────────────────────────────── */
.signal-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent-emerald);
}

.signal-badge__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-emerald);
  animation: pulse 2s infinite;
  flex-shrink: 0;
}

/* ── Floating Actions ─────────────────────────────────────── */
.floating-actions {
  position: fixed;
  right: 24px;
  bottom: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 900;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--duration-base) var(--ease-out);
}

.floating-actions.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* floating-action (HTML) = floating-actions__btn (CSS) */
.floating-action,
.floating-actions__btn {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  cursor: pointer;
  transition: all var(--duration-fast);
  text-decoration: none;
}

.floating-action:hover,
.floating-actions__btn:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.floating-action--contact:hover {
  background: var(--accent-emerald);
  border-color: var(--accent-emerald);
}