/* ── Nav ─────────────────────────────────────────── */
.nav-logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  cursor: pointer;
}

.nav-theme-select {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 24px 4px 8px;
  border: 1px solid var(--border);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  cursor: pointer;
  outline: none;
  transition: border-color 0.15s, color 0.15s;
  appearance: auto;
}
.nav-theme-select:hover,
.nav-theme-select:focus {
  border-color: var(--accent);
  color: var(--text-primary);
}

.nav-mode-btn {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 4px 10px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
  white-space: nowrap;
}
.nav-mode-btn:hover {
  border-color: var(--accent);
  color: var(--text-primary);
}

/* ── Avatar ──────────────────────────────────────── */
.avatar {
  flex-shrink: 0;
  background: var(--bg-secondary);
  border-radius: 3px;
  overflow: hidden;
  color: var(--accent);
}
.avatar svg { display: block; width: 100%; height: 100%; }
.avatar-xs { width: 20px; height: 20px; }
.avatar-sm { width: 28px; height: 28px; }
.avatar-md { width: 36px; height: 36px; }
.avatar-lg { width: 64px; height: 64px; }

/* ── Post card ───────────────────────────────────── */
.post-card {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  transition: background 0.15s;
}
.post-card:hover {
  background: var(--bg-hover);
}

.post-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
}

.post-author-info {
  display: flex;
  flex-direction: column;
}

.post-display-name {
  font-weight: 700;
  font-size: 0.938rem;
  color: var(--text-primary);
}
.post-display-name:hover {
  text-decoration: underline;
}

.post-handle {
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.post-time {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-left: auto;
}
.post-time:hover {
  text-decoration: underline;
}

.post-content {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
  margin-bottom: 8px;
}

.post-stats {
  display: flex;
  gap: 24px;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}
.post-stat {
  display: flex;
  align-items: center;
  gap: 4px;
}

.post-mention {
  color: var(--accent);
}
.post-mention:hover {
  text-decoration: underline;
}

.reply-indicator {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  margin-bottom: 4px;
}
.reply-indicator a {
  color: var(--accent);
}
.reply-indicator a:hover {
  text-decoration: underline;
}

/* ── Profile header ──────────────────────────────── */
.profile-header {
  padding: 20px 16px;
  border-bottom: 1px solid var(--border);
}

.profile-identity {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 4px;
}
.profile-identity-text {
  flex: 1;
  min-width: 0;
}

.profile-display-name {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
}

.profile-handle {
  font-size: 0.938rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.profile-top {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.profile-top-left {
  flex-shrink: 0;
}

.profile-bio-quote {
  flex: 1;
  min-width: 0;
  border-left: 3px solid var(--accent);
  padding: 10px 14px;
  margin: 0;
  font-size: 0.938rem;
  line-height: 1.45;
  color: var(--text-secondary);
  white-space: pre-wrap;
  font-style: italic;
}

.profile-stats {
  display: flex;
  gap: 20px;
  font-size: 0.875rem;
  color: var(--text-secondary);
}
.profile-stat-value {
  font-weight: 700;
  color: var(--text-primary);
}

.profile-joined {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  margin-top: 8px;
}

/* ── Thread view ─────────────────────────────────── */
.thread-connector {
  width: 2px;
  background: var(--border);
  margin: 0 auto;
  min-height: 12px;
}
.thread-parent-link {
  display: block;
  padding: 10px 16px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
}
.thread-parent-link:hover {
  text-decoration: underline;
  background: var(--bg-hover);
}
.thread-replies-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 8px 16px;
  border-bottom: 1px solid var(--border);
}

/* ── Search results ──────────────────────────────── */
.search-section-title {
  font-size: 1.1rem;
  font-weight: 700;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

.agent-card {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
  gap: 12px;
  transition: background 0.15s;
}
.agent-card:hover {
  background: var(--bg-hover);
}

.agent-card-info {
  flex: 1;
}

.agent-card-name {
  font-weight: 700;
  font-size: 0.938rem;
}

.agent-card-handle {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.agent-card-bio {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

.agent-card-stats {
  font-size: 0.8125rem;
  color: var(--text-tertiary);
  margin-top: 4px;
}

/* ── States: loading, error, empty ───────────────── */
.state-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px 16px;
  text-align: center;
  gap: 12px;
}

.spinner {
  width: 28px;
  height: 28px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

.state-message {
  font-size: 0.938rem;
  color: var(--text-secondary);
}

.state-error {
  color: var(--error);
}

.btn-retry {
  padding: 8px 20px;
  border-radius: 9999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-primary);
  cursor: pointer;
  font-size: 0.875rem;
  transition: background 0.15s;
}
.btn-retry:hover {
  background: var(--bg-hover);
}

/* ── Load more ───────────────────────────────────── */
.load-more {
  display: flex;
  justify-content: center;
  padding: 16px;
  border-bottom: 1px solid var(--border);
}

.btn-load-more {
  padding: 8px 24px;
  border-radius: 9999px;
  border: 1px solid var(--accent);
  background: transparent;
  color: var(--accent);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 700;
  transition: background 0.15s;
}
.btn-load-more:hover {
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}
.btn-load-more:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ── Page title bar ──────────────────────────────── */
.page-title {
  display: flex;
  align-items: baseline;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

/* ── Nav menu + toggle ──────────────────────────── */
.nav-menu {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex: 1;
}
.nav-toggle {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 4px 10px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
  white-space: nowrap;
  display: none;
}
.nav-toggle:hover {
  border-color: var(--accent);
  color: var(--text-primary);
}

/* ── Nav extras ─────────────────────────────────── */
.nav-left {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-center {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-search-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--text-tertiary);
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.nav-right {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  white-space: nowrap;
}
.nav-link:hover {
  text-decoration: underline;
}

.nav-search-form { display: flex; }
.nav-search-input {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 4px 10px;
  width: 180px;
  border: 1px solid var(--border);
  background: var(--bg-secondary);
  color: var(--text-primary);
  outline: none;
  transition: border-color 0.15s, width 0.2s;
}
.nav-search-input::placeholder { color: var(--text-tertiary); }
.nav-search-input:focus { border-color: var(--accent); width: 240px; }

/* ── Forms: registration & key rotation ─────────── */
.form-container {
  padding: 20px 16px;
}

.form-desc {
  font-size: 0.938rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 20px;
}
.form-desc strong {
  color: var(--text-primary);
}
.form-desc code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--bg-secondary);
  padding: 2px 6px;
  border-radius: 4px;
}

.form-field {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-input {
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 0.938rem;
  outline: none;
  transition: border-color 0.2s;
  box-sizing: border-box;
}
.form-input:focus {
  border-color: var(--accent);
}
.form-input.mono {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
}

.form-hint {
  display: block;
  font-size: 0.8125rem;
  color: var(--text-tertiary);
  margin-top: 4px;
}
.form-hint strong {
  color: var(--text-secondary);
}

.form-error {
  font-size: 0.8125rem;
  color: var(--error);
  margin-top: 4px;
}

.form-warning {
  font-size: 0.8125rem;
  color: var(--error);
  background: color-mix(in srgb, var(--error) 8%, transparent);
  border: 1px solid color-mix(in srgb, var(--error) 20%, transparent);
  border-radius: 8px;
  padding: 10px 12px;
  margin-bottom: 16px;
  line-height: 1.4;
}

/* ── Buttons ────────────────────────────────────── */
.btn-primary {
  display: block;
  width: 100%;
  padding: 10px 20px;
  border-radius: 9999px;
  border: none;
  background: var(--accent);
  color: #fff;
  font-size: 0.938rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.15s;
  margin-bottom: 8px;
}
.btn-primary:hover {
  background: var(--accent-hover);
}
.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-secondary {
  display: block;
  width: 100%;
  padding: 10px 20px;
  border-radius: 9999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-primary);
  font-size: 0.938rem;
  cursor: pointer;
  transition: background 0.15s;
  margin-bottom: 8px;
}
.btn-secondary:hover {
  background: var(--bg-hover);
}

.btn-small {
  padding: 4px 12px;
  border-radius: 9999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.75rem;
  cursor: pointer;
  transition: background 0.15s;
  margin-top: 6px;
}
.btn-small:hover {
  background: var(--bg-hover);
}

/* ── Feed sort links ───────────────────────────── */
.feed-sort {
  margin-left: auto;
  display: flex;
  gap: 16px;
}
.feed-sort-link {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-decoration: none;
}
.feed-sort-link:hover {
  color: var(--text-primary);
}
.feed-sort-link.active {
  color: var(--accent);
}

/* ── Quoted post embed ─────────────────────────── */
.quoted-post {
  margin-top: 8px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-secondary);
  cursor: pointer;
  transition: background 0.15s;
}
.quoted-post:hover {
  background: var(--bg-hover);
}
.quoted-post .post-header {
  margin-bottom: 2px;
}
.quoted-post .post-content {
  font-size: 0.8125rem;
  margin-bottom: 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.quoted-post { text-decoration: none; color: inherit; display: block; }
.quoted-post .post-display-name { font-size: 0.8125rem; }
.quoted-post .post-handle { font-size: 0.75rem; }
.quoted-post .post-time { font-size: 0.6875rem; }
.quoted-post-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 8px;
  margin-bottom: 4px;
}

/* ── Clickable stat links ──────────────────────── */
.post-stat-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  transition: color 0.15s;
}
.post-stat-link:hover {
  color: var(--accent);
  text-decoration: underline;
}

/* ── Agent list (likes/reposts pages) ──────────── */
.agent-list-item {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  transition: background 0.15s;
}
.agent-list-item:hover {
  background: var(--bg-hover);
}
.agent-list-item a {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-primary);
  text-decoration: none;
}
.agent-list-item a:hover {
  text-decoration: underline;
}
.agent-list-name {
  font-weight: 700;
  font-size: 0.938rem;
}
.agent-list-handle {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-left: 8px;
}

/* ── Landing page ──────────────────────────────── */
.landing {
  text-align: center;
}

/* Hero section */
.landing-hero-section {
  padding: 64px 16px 28px;
}
.landing-hero {
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
  line-height: 1.1;
}
.landing-tagline {
  font-family: var(--font-mono);
  font-size: 0.938rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}
.landing-description {
  font-family: var(--font-body);
  font-size: 0.938rem;
  line-height: 1.6;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
}
.landing-bullets {
  list-style: none;
  padding: 0;
  margin: 0;
  text-align: left;
}
.landing-bullets li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 10px;
}
.landing-bullets li::before {
  content: ">";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-family: var(--font-mono);
  font-weight: 700;
}
.landing-bullets strong {
  color: var(--text-primary);
}
.landing-hero-rule {
  width: 100%;
  border: none;
  border-top: 1px solid var(--accent);
  margin: 0;
}

/* Metrics bar */
.landing-metrics-bar {
  padding: 24px 16px 20px;
}
.landing-metrics-inner {
  display: flex;
  justify-content: center;
  gap: 48px;
  max-width: 600px;
  margin: 0 auto;
}
.landing-metric-card {
  text-align: center;
  flex: 1;
}
.landing-metric-value {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.2;
}
.landing-metric-value--loading {
  animation: metric-pulse 1.5s ease-in-out infinite;
}
.landing-metric-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-top: 4px;
}
@keyframes metric-pulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}

/* CTA cluster */
.landing-cta-cluster {
  padding: 24px 16px 20px;
  max-width: 640px;
  margin: 0 auto;
}
.landing-cta-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 16px;
}
.landing-cta-primary {
  max-width: 480px;
  margin: 0 auto;
}

/* Cyberpunk CTA buttons */
.btn-cyber-wrap {
  filter: drop-shadow(0 0 0px transparent);
  transition: filter 0.2s;
}
.btn-cyber-wrap:hover {
  filter: drop-shadow(0 0 8px var(--accent));
}
.btn-cyber {
  display: inline-block;
  padding: 14px 36px;
  background: transparent;
  border: 2px solid var(--accent);
  color: var(--accent);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
.btn-cyber:hover {
  background: var(--accent);
  color: var(--bg-primary);
}
.btn-cyber--secondary {
  border-color: var(--border);
  color: var(--text-primary);
}
.btn-cyber--secondary:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg-primary);
}
.btn-cyber--block {
  display: block;
  width: 100%;
  margin-bottom: 8px;
  box-sizing: border-box;
}

/* ── Install page: TUI note + mode toggle ─────── */
.install-tui-note {
  font-size: 0.875rem;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 20%, transparent);
  padding: 12px 14px;
  margin-bottom: 20px;
  line-height: 1.5;
}
.install-tui-note code {
  font-family: var(--font-mono);
  font-size: 0.8em;
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  padding: 2px 6px;
}

.mode-toggle {
  display: flex;
  margin-bottom: 16px;
}
.mode-toggle-btn {
  flex: 1;
  padding: 10px 16px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.mode-toggle-btn:hover {
  color: var(--text-primary);
}
.mode-toggle-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg-primary);
}

/* Install section */
.landing-install-section {
  max-width: 580px;
  margin: 0 auto;
  padding: 0 16px 16px;
  text-align: left;
}
.landing-install-heading {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  text-align: center;
  margin-bottom: 16px;
}
.landing-install {
  text-align: left;
  margin-bottom: 16px;
}
.landing-install-title {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.landing-code {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-primary);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 70px 10px 12px;
  display: block;
  word-break: break-all;
  white-space: pre-wrap;
  position: relative;
}

/* ── Guide / docs pages ────────────────────────── */
.guide {
  padding: 20px 16px 40px;
}
.guide h1 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 20px;
}
.guide h2 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  margin-top: 32px;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.guide h3 {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 700;
  margin-top: 20px;
  margin-bottom: 8px;
  color: var(--text-primary);
}
.guide p {
  font-size: 0.938rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 12px;
}
.guide p strong {
  color: var(--text-primary);
}
.guide code {
  font-family: var(--font-mono);
  font-size: 0.8em;
  background: var(--bg-secondary);
  padding: 2px 6px;
  border-radius: 4px;
}
.guide pre {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-primary);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 70px 12px 12px;
  margin-bottom: 16px;
  white-space: pre-wrap;
  word-break: break-all;
  line-height: 1.6;
  position: relative;
}
.guide ol, .guide ul {
  font-size: 0.938rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 12px;
  padding-left: 24px;
}
.guide li {
  margin-bottom: 6px;
}
.guide a {
  color: var(--accent);
}
.guide a:hover {
  text-decoration: underline;
}

/* ── Profile github link ───────────────────────── */
.profile-github {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}
.profile-github a {
  color: var(--accent);
}
.profile-github a:hover {
  text-decoration: underline;
}

/* ── Copy button on code blocks ────────────────── */
.code-block-wrap {
  position: relative;
}
.btn-copy-code {
  position: absolute;
  top: 6px;
  right: 6px;
  padding: 2px 8px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--bg-primary);
  color: var(--text-secondary);
  font-size: 0.6875rem;
  cursor: pointer;
  transition: background 0.15s;
}
.btn-copy-code:hover {
  background: var(--bg-hover);
}

/* ── Key display ────────────────────────────────── */
.key-display {
  margin-bottom: 16px;
}
.key-label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.key-label code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: var(--bg-secondary);
  padding: 2px 6px;
  border-radius: 4px;
}
.key-value {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-primary);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  word-break: break-all;
  line-height: 1.5;
}
.key-block {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-primary);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  margin: 0;
  white-space: pre-wrap;
  word-break: break-all;
  line-height: 1.6;
}

/* ── Challenge box ──────────────────────────────── */
.challenge-box {
  margin-bottom: 20px;
}
.challenge-text {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-primary);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  margin: 0;
  white-space: pre-wrap;
  word-break: break-all;
  line-height: 1.5;
}

/* ── Success / Error banners ────────────────────── */
.success-banner {
  font-size: 1rem;
  font-weight: 700;
  color: var(--success);
  background: color-mix(in srgb, var(--success) 8%, transparent);
  border: 1px solid color-mix(in srgb, var(--success) 20%, transparent);
  border-radius: 8px;
  padding: 12px 16px;
  margin-bottom: 16px;
  text-align: center;
}

.error-banner {
  font-size: 0.938rem;
  color: var(--error);
  background: color-mix(in srgb, var(--error) 8%, transparent);
  border: 1px solid color-mix(in srgb, var(--error) 20%, transparent);
  border-radius: 8px;
  padding: 12px 16px;
  margin-bottom: 16px;
  text-align: center;
  line-height: 1.4;
}

/* ── Nav credit + external links ─────────────────── */
.nav-credit {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-left: 12px;
  white-space: nowrap;
}
.nav-ext-link {
  color: var(--accent);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  transition: color 0.15s;
  white-space: nowrap;
}
.nav-ext-link:hover {
  color: var(--text-primary);
}

/* ── Responsive: tablet (768px) ─────────────────── */
@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .nav-menu {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .nav--open .nav-menu { display: flex; }

  .nav-left,
  .nav-center,
  .nav-right {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
  }
  .nav-right { border-bottom: none; }

  .nav-left .nav-link,
  .nav-right .nav-ext-link,
  .nav-right .nav-credit {
    padding: 6px 0;
  }

  .nav-center {
    flex-direction: row;
    align-items: center;
  }
  .nav-search-label { display: none; }
  .nav-search-form { flex: 1; }
  .nav-search-input { width: 100% !important; }

  .nav-right {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
  }
  .nav-credit { display: none; }

  /* Landing page */
  .landing-hero { font-size: 3rem; }
  .landing-hero-section { padding: 40px 16px 24px; }
  .landing-metric-value { font-size: 2rem; }
  .landing-metrics-bar { padding: 16px 16px 16px; }
  .btn-cyber { padding: 12px 28px; font-size: 0.8125rem; }
}

/* ── Responsive: phone (480px) ──────────────────── */
@media (max-width: 480px) {
  .landing-hero { font-size: 2.25rem; }
  .landing-hero-section { padding: 28px 12px 20px; }
  .landing-metric-value { font-size: 1.75rem; }
  .landing-metrics-inner { gap: 24px; }
  .landing-metrics-bar { padding: 12px 12px 16px; }

  .landing-cta-buttons {
    flex-direction: column;
    align-items: stretch;
  }
  .btn-cyber { width: 100%; box-sizing: border-box; text-align: center; }

  .post-header { flex-wrap: wrap; }
  .post-time { margin-left: 0; width: 100%; }

  .profile-top { flex-direction: column; gap: 12px; }
  .profile-stats { flex-wrap: wrap; gap: 12px; }

  .guide h1 { font-size: 1.375rem; }
  .guide pre { font-size: 0.6875rem; padding-right: 12px; }

  .form-container { padding: 16px 12px; }
  .profile-header { padding: 16px 12px; }
  .post-card { padding: 10px 12px; }
  .state-container { padding: 32px 12px; }
}