/* Bitra PWA styles (plan step 9, pwa-frontend). Single-user utility UI —
   optimized for iPhone Safari / Mac Safari, not a general responsive
   showcase. Light/dark handled via prefers-color-scheme since the user's
   devices may be in either mode. */

:root {
  --bg: #f8fafc;
  --surface: #ffffff;
  --border: #e2e8f0;
  --text: #0f172a;
  --text-muted: #64748b;
  --accent: #1e3a5f;
  --accent-contrast: #ffffff;
  --unread-dot: #dc2626;
  --danger-bg: #fee2e2;
  --danger-text: #991b1b;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f172a;
    --surface: #1e293b;
    --border: #334155;
    --text: #f1f5f9;
    --text-muted: #94a3b8;
    --accent: #3b82f6;
    --accent-contrast: #0f172a;
    --danger-bg: #450a0a;
    --danger-text: #fecaca;
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  padding-top: env(safe-area-inset-top);
  padding-bottom: env(safe-area-inset-bottom);
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1;
}

header h1 {
  font-size: 1.1rem;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.badge {
  display: inline-flex;
  min-width: 1.4rem;
  height: 1.4rem;
  padding: 0 0.4rem;
  align-items: center;
  justify-content: center;
  background: var(--unread-dot);
  color: #fff;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge[hidden] {
  display: none;
}

button {
  font: inherit;
  border: none;
  border-radius: 0.5rem;
  padding: 0.5rem 0.85rem;
  background: var(--accent);
  color: var(--accent-contrast);
  cursor: pointer;
}

button:disabled {
  opacity: 0.6;
  cursor: default;
}

#enable-push {
  font-size: 0.85rem;
}

[hidden] {
  display: none !important;
}

#status-bar {
  padding: 0.35rem 1rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: center;
}

#fatal-banner {
  margin: 1rem;
  padding: 0.85rem 1rem;
  background: var(--danger-bg);
  color: var(--danger-text);
  border-radius: 0.5rem;
  font-size: 0.9rem;
}

#auth-entry {
  margin: 1rem;
  padding: 1rem;
  background: var(--danger-bg);
  border-radius: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

#auth-entry p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--danger-text);
}

#auth-code {
  width: 100%;
  box-sizing: border-box;
  padding: 0.7rem 0.85rem;
  font-size: 1rem;
  border: 1px solid var(--danger-text);
  border-radius: 0.5rem;
}

#auth-submit {
  align-self: flex-start;
  padding: 0.7rem 1.1rem;
  font-size: 0.95rem;
  border: none;
  border-radius: 0.5rem;
  background: var(--danger-text);
  color: #fff;
}

#auth-submit:disabled {
  opacity: 0.6;
}

main {
  padding: 0 0 2rem;
}

#feed-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.feed-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.feed-item.is-unread {
  border-left: 3px solid var(--unread-dot);
}

.feed-item .row-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
}

.feed-item .portal-label {
  font-weight: 600;
  font-size: 0.85rem;
}

.feed-item.is-unread .portal-label::before {
  content: '';
  display: inline-block;
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 999px;
  background: var(--unread-dot);
  margin-right: 0.4rem;
}

.feed-item .timestamp {
  font-size: 0.75rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.feed-item .preview {
  font-size: 0.9rem;
  line-height: 1.35;
  /* Portal content only ever reaches the DOM via `.textContent` (see app.js's
     renderText helper) — this stylesheet has no bearing on that discipline,
     but the two must always be read together. */
  word-break: break-word;
  white-space: pre-wrap;
}

.feed-item .row-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 0.25rem;
}

.feed-item .row-actions button,
.feed-item .row-actions a {
  font-size: 0.8rem;
  padding: 0.3rem 0.6rem;
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--border);
  border-radius: 0.4rem;
  text-decoration: none;
}

#empty-state {
  padding: 2rem 1rem;
  text-align: center;
  color: var(--text-muted);
}