/* ============================================================
   layout.css — Structural Layout
   Topbar, hero, sections, footer.
   ============================================================ */

/* ── Topbar ── */
.topbar {
  position: sticky;
  top: 0;
  z-index: var(--z-topbar);
  height: var(--topbar-height);
  background: linear-gradient(90deg, var(--color-bg-2) 0%, #0f1a18 100%);
  border-bottom: 1px solid #1e3a30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-8);
  font-size: var(--text-sm);
}

.topbar__left {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-gray);
}

/* Avatar chip */
.topbar__chip {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  background: rgba(57, 255, 131, 0.06);
  border: 1px solid rgba(57, 255, 131, 0.15);
  border-radius: 20px;
  padding: 2px 10px 2px 4px;
}

.topbar__avatar {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-green), var(--color-cyan));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 8px;
  font-weight: var(--weight-bold);
  color: var(--color-bg-0);
  flex-shrink: 0;
}

.topbar__prompt { color: var(--color-green); }
.topbar__at     { color: var(--color-border); }
.topbar__host   { color: var(--color-cyan); }

.topbar__separator {
  color: var(--color-border);
  margin: 0 var(--space-2);
}

/* Live dot */
.topbar__live-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-green);
  flex-shrink: 0;
  animation: pulse-dot 2s ease-in-out infinite;
}

.topbar__clock {
  color: var(--color-gray);
  letter-spacing: 0.05em;
}

.topbar__nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.topbar__nav-link {
  color: var(--color-gray);
  font-size: var(--text-sm);
  transition: color var(--transition-fast);
}

.topbar__nav-link:hover {
  color: var(--color-green);
}

.topbar__lang-pill {
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  padding: 2px var(--space-2);
  background: rgba(0, 212, 212, 0.07);
  border: 1px solid rgba(0, 212, 212, 0.2);
  color: var(--color-cyan);
  border-radius: 20px;
  cursor: pointer;
  user-select: none;
  line-height: 1.6;
  transition:
    background var(--transition-fast),
    border-color var(--transition-fast),
    color var(--transition-fast);
}

.topbar__lang-pill:hover {
  background: rgba(0, 212, 212, 0.14);
  border-color: rgba(0, 212, 212, 0.4);
  color: var(--color-cyan);
}

.topbar__lang-pill:focus-visible {
  outline: 2px solid var(--color-cyan);
  outline-offset: 3px;
}

/* ── Hero / Terminal wrapper ── */
.hero {
  min-height: calc(100vh - var(--topbar-height));
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-16) var(--space-8);
  max-width: var(--max-width);
  margin: 0 auto;
  background:
    linear-gradient(rgba(57, 255, 131, 0.012) 1px, transparent 1px),
    linear-gradient(90deg, rgba(57, 255, 131, 0.012) 1px, transparent 1px);
  background-size: 32px 32px;
}

/* ── Sections ── */
.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-20) var(--space-8);
  border-top: 1px solid var(--color-border);
}

.section__header {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-12);
}

.section__header::before {
  content: '##';
  color: var(--color-green);
  font-size: var(--text-md);
  font-weight: var(--weight-bold);
  flex-shrink: 0;
}

.section__title {
  color: var(--color-white);
  font-size: var(--text-md);
  font-weight: var(--weight-semi);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  flex-shrink: 0;
}

.section__separator {
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

/* ── Footer ── */
.footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-8);
  text-align: center;
}

.footer__cmd {
  color: var(--color-gray);
  font-size: var(--text-sm);
}

.footer__prompt {
  color: var(--color-green);
  margin-right: var(--space-2);
}