/* ------------------------------------------------------------------
   AVI-OS — App shell layout
   Sidebar + Topbar + Content area — glass-morphism Apple-touch feel
   ------------------------------------------------------------------ */

/* ── App root ────────────────────────────────────────────────────── */
.app-root {
  display: flex;
  min-height: 100dvh;
  background: var(--bg);
}

/* ── Auth layout ─────────────────────────────────────────────────── */
.auth-root {
  display: flex; align-items: center; justify-content: center;
  min-height: 100dvh; padding: 24px;
  background: radial-gradient(ellipse 80% 60% at 50% -10%, rgba(255,255,255,.04), transparent);
}
.auth-card {
  width: 100%; max-width: 400px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-2xl);
  box-shadow: var(--glass-shadow);
  padding: 36px 32px 32px;
}
.auth-logo { display: flex; align-items: center; gap: 12px; margin-bottom: 28px; }
.auth-logo svg { width: 36px; height: 36px; }
.auth-logo__text b { display: block; font-size: var(--fs-xl); font-weight: 700; letter-spacing: var(--tracking-tight); color: var(--text); }
.auth-logo__text span { font-size: var(--fs-xs); color: var(--text-muted); letter-spacing: var(--tracking-caps); text-transform: uppercase; }

/* ── Sidebar ─────────────────────────────────────────────────────── */
.side {
  width: var(--sidebar-w);
  flex-shrink: 0;
  height: 100dvh;
  position: sticky;
  top: 0;
  display: flex;
  flex-direction: column;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-right: 1px solid var(--glass-border);
  overflow: hidden;
  transition: width var(--t-slow) var(--ease-out);
  z-index: 100;
}
.side--collapsed { width: var(--sidebar-w-sm); }

.side__brand {
  display: flex; align-items: center; gap: 10px;
  padding: 18px 16px 14px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.side__brand-mark {
  width: 32px; height: 32px; flex-shrink: 0;
  background: var(--accent); border-radius: var(--r-md);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-inverse);
}
.side__brand-word { overflow: hidden; }
.side__brand-word b    { display: block; font-size: var(--fs-sm); font-weight: 700; white-space: nowrap; color: var(--text); letter-spacing: var(--tracking-tight); }
.side__brand-word span { display: block; font-size: var(--fs-2xs); color: var(--text-muted); white-space: nowrap; letter-spacing: var(--tracking-caps); text-transform: uppercase; }

.side__nav    { flex: 1; overflow-y: auto; padding: 10px 8px; }
.side__group  { font-size: 9.5px; font-weight: 700; letter-spacing: var(--tracking-caps); text-transform: uppercase; color: var(--text-faint); padding: 12px 8px 4px; white-space: nowrap; overflow: hidden; }
.side__link {
  display: flex; align-items: center; gap: 9px;
  padding: 7px 9px; border-radius: var(--r-md);
  font-size: var(--fs-sm); color: var(--text-muted);
  transition: background var(--t-fast), color var(--t-fast);
  white-space: nowrap; text-decoration: none;
  cursor: pointer; border: none; background: none; width: 100%; text-align: left;
}
.side__link:hover { background: var(--accent-soft); color: var(--text); }
.side__link[aria-current="page"] { background: var(--accent); color: var(--text-inverse); }
.side__link[aria-current="page"] svg { color: var(--text-inverse); }
.side__link[aria-current="page"] .count { background: var(--text-inverse); color: var(--accent); }
.side__link svg { flex-shrink: 0; opacity: .7; }
.side__link[aria-current="page"] svg { opacity: 1; }

.side__foot {
  padding: 10px 10px 14px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}
.org-card { display: flex; align-items: center; gap: 9px; }
.org-card__mark { width: 28px; height: 28px; border-radius: var(--r-sm); background: var(--border-strong); color: var(--text); display: flex; align-items: center; justify-content: center; font-size: var(--fs-xs); font-weight: 700; flex-shrink: 0; }
.org-card__meta { overflow: hidden; }
.org-card__meta b    { display: block; font-size: var(--fs-xs); font-weight: 600; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.org-card__meta span { display: block; font-size: 10px; color: var(--text-muted); white-space: nowrap; }

/* ── Topbar ──────────────────────────────────────────────────────── */
.top {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 10px;
  height: var(--topbar-h); padding: 0 24px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur-sm);
  -webkit-backdrop-filter: var(--glass-blur-sm);
  border-bottom: 1px solid var(--glass-border);
}
.top__crumbs  { flex: 1; display: flex; align-items: center; gap: 6px; font-size: var(--fs-sm); color: var(--text-muted); overflow: hidden; }
.top__crumbs b { color: var(--text); font-weight: 600; white-space: nowrap; }
.top__sep      { opacity: .35; }
.top__actions  { display: flex; align-items: center; gap: 8px; }
.top__badge    { background: var(--accent-soft); border: 1px solid var(--border); border-radius: var(--r-pill); padding: 3px 9px; font-size: var(--fs-2xs); font-weight: 600; letter-spacing: 0.04em; color: var(--text-muted); white-space: nowrap; }

/* ── Notification bell + dropdown (Phase 2.5) ────────────────────── */
.top__bell { position: relative; }
.top__bell-badge {
  position: absolute; top: 2px; right: 2px;
  min-width: 16px; height: 16px; padding: 0 4px;
  border-radius: 8px; background: var(--bad, #f87171); color: #fff;
  font-size: 10px; font-weight: 700; line-height: 16px;
  display: inline-flex; align-items: center; justify-content: center;
  box-shadow: 0 0 0 2px var(--bg, #0a0a0a);
}
.top__bell-badge[hidden] { display: none; }

.notif-panel {
  position: absolute; top: calc(var(--topbar-h) - 4px); right: 16px;
  width: min(380px, calc(100vw - 32px));
  max-height: min(70vh, 560px);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-xl);
  display: flex; flex-direction: column;
  z-index: 200;
  overflow: hidden;
}
.notif-panel[aria-hidden="true"] { display: none; }
.notif__head {
  display: flex; align-items: flex-start; justify-content: space-between;
  padding: 12px 14px; gap: 10px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.notif__head b { font-size: var(--fs-sm); color: var(--text); }
.notif__head-meta { font-size: var(--fs-2xs); color: var(--text-muted); margin-top: 2px; letter-spacing: 0.04em; text-transform: uppercase; }
.notif__list { flex: 1; overflow-y: auto; }
.notif__empty { padding: 28px 18px; text-align: center; }
.notif__row {
  width: 100%; display: grid; grid-template-columns: 10px 1fr auto;
  align-items: flex-start; gap: 10px;
  padding: 10px 14px;
  background: transparent; border: 0; border-bottom: 1px solid var(--border);
  cursor: pointer; text-align: left;
  font-family: var(--font-sans);
  color: var(--text-soft);
  transition: background var(--t-fast);
}
.notif__row:hover { background: var(--accent-soft); }
.notif__row:last-child { border-bottom: 0; }
.notif__row--unread { background: var(--accent-soft); }
.notif__row--unread .notif__title { color: var(--text); font-weight: 600; }
.notif__dot { width: 8px; height: 8px; border-radius: 50%; margin-top: 6px; flex-shrink: 0; }
.notif__body { min-width: 0; }
.notif__title { font-size: var(--fs-sm); color: var(--text); font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.notif__sub   { font-size: var(--fs-xs); color: var(--text-muted); margin-top: 2px; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.notif__time  { font-size: 10px; color: var(--text-faint); font-family: var(--font-mono); flex-shrink: 0; padding-top: 2px; }
.notif__foot {
  padding: 8px 14px;
  border-top: 1px solid var(--border);
  font-size: var(--fs-2xs); color: var(--text-muted);
  flex-shrink: 0;
}

/* ── Main content area ───────────────────────────────────────────── */
.main-wrap {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
}
.main-content { flex: 1; min-width: 0; }

/* ── Tutorial overlay ────────────────────────────────────────────── */
.tutorial-overlay { display: none; position: fixed; inset: 0; z-index: 8000; }
.tutorial-overlay.active { display: block; }
.tutorial-spotlight {
  position: absolute; border-radius: var(--r-xl);
  box-shadow: 0 0 0 9999px rgba(0,0,0,.65), 0 0 0 3px var(--glass-border);
  transition: all var(--t-base) var(--ease-out);
}
.tutorial-tooltip {
  position: absolute;
  background: var(--glass-bg); backdrop-filter: var(--glass-blur); -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border); border-radius: var(--r-xl);
  box-shadow: var(--shadow-xl); padding: 20px;
  max-width: 320px; min-width: 240px;
}
.tutorial-tooltip h4 { font-size: var(--fs-lg); margin-bottom: 6px; }
.tutorial-tooltip p  { font-size: var(--fs-sm); color: var(--text-soft); margin-bottom: 14px; }
.tutorial-tooltip .tutorial-nav { display: flex; align-items: center; justify-content: space-between; }
.tutorial-step { font-size: var(--fs-xs); color: var(--text-muted); }

/* ── Responsive ──────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .side { position: fixed; left: 0; top: 0; bottom: 0; transform: translateX(-100%); transition: transform var(--t-slow) var(--ease-out); }
  .side--open { transform: translateX(0); }
  .main-wrap  { margin-left: 0; }
}

/* ── Palette (command menu) ──────────────────────────────────────── */
.palette-root { position: fixed; inset: 0; z-index: 9000; display: flex; align-items: flex-start; justify-content: center; padding-top: 15vh; background: rgba(0,0,0,.5); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); }
.palette-root[aria-hidden="true"] { display: none; }
.palette {
  width: 100%; max-width: 540px;
  background: var(--glass-bg); backdrop-filter: var(--glass-blur); -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border); border-radius: var(--r-2xl);
  box-shadow: var(--shadow-xl); overflow: hidden;
  animation: modalIn var(--t-base) var(--ease-out);
}