/* ============================================================================
 * common.css — shared across landing, zulip, pair
 *
 * Conversation page (conversation.html) deliberately does NOT load this file;
 * it uses a legacy plain look defined entirely in conversation.css.
 *
 * Page-specific stylesheets override the values noted below where they differ.
 * Defaults pick the value used by the majority of pages; overrides are noted.
 * ============================================================================ */

:root {
  --bg: #f6f7fb;
  --card: #fff;
  --border: #e2e5ec;
  --text: #1a1d26;
  --muted: #5c6370;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --checkin: #0d9488;        /* used by pair only; harmless on other pages */
  --checkin-hover: #0f766e;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0, 0, 0, .06), 0 4px 12px rgba(0, 0, 0, .04);
}

* { box-sizing: border-box; }

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  margin: 0;
  padding: 1.5rem 1.25rem 3rem;
  line-height: 1.45;          /* zulip + pair; landing overrides to 1.5 */
}

.wrap { margin: 0 auto; }     /* max-width set per-page */

.brand {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0 0 0.65rem;        /* zulip + pair; landing overrides to 1.25rem */
}

/* ---- App navigation tabs (used by zulip + pair) ---- */

.site-header { margin-bottom: 1.25rem; }   /* pair; zulip overrides to 1.5rem */

.app-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
}

.app-nav .nav-item {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1rem;
  border-radius: 10px;
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--muted);
  background: #e8ebf2;
  border: 1px solid transparent;
}

.app-nav .nav-item:hover {
  color: var(--text);
  background: #dfe3ec;
}

.app-nav .nav-item--active {
  background: var(--card);
  color: var(--text);
  border-color: var(--border);
  box-shadow: var(--shadow);
}

/* Pushes a nav item (e.g. the Logout link) to the far right of .app-nav. */
.nav-spacer { margin-left: auto; }