/* ==========================================================================
   Layout: app shell, sidebar, top bar, task drawer, responsive rules
   ========================================================================== */

.app {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  height: 100vh;
  height: 100dvh;
}

/* ---------- Sidebar ---------- */

.sidebar {
  display: flex; min-height: 0;
  background: var(--surface);
  border-right: 1px solid var(--border);
}
.sidebar-inner {
  flex: 1; min-width: 0; overflow-y: auto;
  display: flex; flex-direction: column; gap: 22px;
  padding: 20px 12px 16px;
}
.sidebar-backdrop { display: none; }

.brand {
  display: flex; align-items: center; gap: 10px;
  padding: 2px 8px;
  font-size: 1.3rem; font-weight: 700; letter-spacing: -0.03em;
}
.brand-mark { width: 34px; height: 30px; color: var(--primary); }
.sidebar-close { display: none; margin-left: auto; }

.nav { display: flex; flex-direction: column; gap: 2px; }

.nav-item {
  display: flex; align-items: center; gap: 10px;
  width: 100%; min-height: 38px; padding: 7px 10px;
  border-radius: var(--radius-sm);
  color: var(--text-muted); font-weight: 500; text-align: left;
  transition: background-color .15s, color .15s;
}
.nav-item:hover { background: var(--surface-sunken); color: var(--text); }
.nav-item.is-active { background: var(--text); color: var(--bg); }
.nav-item.is-active .icon { color: var(--primary); }
.nav-label { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nav-count { font-family: var(--font-mono); font-size: 11px; }

.nav-row { position: relative; display: flex; align-items: center; }
.row-edit { position: absolute; right: 4px; opacity: 0; }
.nav-row:hover .row-edit, .row-edit:focus-visible { opacity: 1; }
.nav-row:hover .nav-count, .nav-row:focus-within .nav-count { visibility: hidden; }
.nav-item.is-active + .row-edit { color: var(--bg); }
.nav-item.is-active + .row-edit:hover { background: transparent; color: var(--primary); }

.dot {
  width: 10px; height: 10px; flex-shrink: 0;
  border-radius: 3px; background: var(--dot);
  box-shadow: 0 0 0 1px var(--border-strong);
}

.side-section { display: flex; flex-direction: column; gap: 2px; }
.side-head { display: flex; align-items: center; justify-content: space-between; padding: 0 4px 6px 10px; }
.side-cat {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 4px 2px 10px;
  font-size: 11px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--text-faint);
}
.side-cat .icon-btn { opacity: 0; }
.side-cat:hover .icon-btn, .side-cat .icon-btn:focus-visible { opacity: 1; }
.side-add {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 10px; border-radius: var(--radius-sm);
  font-size: 13px; color: var(--text-muted);
}
.side-add:hover { color: var(--text); background: var(--surface-sunken); }

.tag-cloud { display: flex; flex-wrap: wrap; gap: 6px; padding: 0 10px; }
.tag-pill {
  font-family: var(--font-mono); font-size: 12px;
  padding: 3px 10px; border-radius: var(--radius-pill);
  background: var(--surface-sunken); color: var(--text-muted);
}
.tag-pill:hover { color: var(--text); }
.tag-pill.is-active { background: var(--text); color: var(--bg); }

.side-foot {
  margin-top: auto; padding-top: 12px;
  display: flex; flex-wrap: wrap; gap: 2px;
  border-top: 1px solid var(--border);
}
.side-foot button {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 8px; border-radius: 8px;
  font-size: 12px; color: var(--text-muted);
}
.side-foot button:hover { color: var(--text); background: var(--surface-sunken); }

/* ---------- Main column ---------- */

.main { display: flex; flex-direction: column; min-width: 0; min-height: 0; }
.content { flex: 1; overflow-y: auto; }
.page { max-width: 880px; margin: 0 auto; padding: 0 32px 120px; }
.page-wide { max-width: 1240px; }

.topbar {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 32px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}
.menu-btn { display: none; }

.search {
  flex: 1; max-width: 440px;
  display: flex; align-items: center; gap: 8px;
  height: 40px; padding: 0 8px 0 14px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  transition: border-color .15s, box-shadow .15s;
}
.search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
.search input { flex: 1; min-width: 0; border: 0; background: none; outline: none; color: var(--text); }
.search input::-webkit-search-cancel-button { cursor: pointer; }
kbd {
  font-family: var(--font-mono); font-size: 11px;
  padding: 0 6px; border-radius: 5px;
  border: 1px solid var(--border-strong); color: var(--text-muted);
}

.topbar-actions { margin-left: auto; display: flex; align-items: center; gap: 4px; }
.new-btn { margin-left: 8px; }

.badge {
  position: absolute; top: 2px; right: 2px;
  min-width: 17px; height: 17px; padding: 0 4px;
  display: grid; place-items: center;
  border-radius: var(--radius-pill);
  background: var(--primary); color: var(--on-primary);
  font-size: 10px; font-weight: 700;
}

.page-head { padding: 32px 0 22px; }
.page-head h1 {
  margin-top: 8px;
  font-size: clamp(2rem, 4.5vw, 2.9rem);
  font-weight: 700; line-height: 1.02; letter-spacing: -0.04em;
  overflow-wrap: anywhere;
}

/* ---------- Task drawer ---------- */

.drawer-backdrop, .modal-backdrop {
  position: fixed; inset: 0; z-index: 40;
  background: var(--scrim);
}
.drawer {
  position: fixed; top: 0; right: 0; bottom: 0; z-index: 41;
  width: min(var(--drawer-w), 100vw);
  display: flex; flex-direction: column;
  background: var(--surface);
  border-left: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  outline: none;
}
.drawer-head {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}
.drawer-head .mono-tag { flex: 1; }
.drawer-body {
  flex: 1; overflow-y: auto;
  display: flex; flex-direction: column; gap: 22px;
  padding: 22px 24px 48px;
}

/* Entry animations run only on open, not on every re-render */
.animate-in.drawer { animation: slide-in .28s var(--ease); }
.animate-in.drawer-backdrop, .animate-in.modal-backdrop { animation: fade .2s ease; }
@keyframes slide-in { from { transform: translateX(32px); opacity: 0; } }
@keyframes fade { from { opacity: 0; } }

/* ---------- Tablet & phone ---------- */

@media (max-width: 960px) {
  .app { grid-template-columns: 1fr; }

  .sidebar {
    position: fixed; inset: 0 auto 0 0; z-index: 50;
    width: min(300px, 86vw);
    transform: translateX(-100%);
    transition: transform .28s var(--ease);
  }
  .sidebar-open .sidebar { transform: none; box-shadow: var(--shadow-lg); }
  .sidebar-open .sidebar-backdrop {
    display: block; position: fixed; inset: 0; z-index: 49;
    background: var(--scrim); animation: fade .2s ease;
  }
  .menu-btn, .sidebar-close { display: inline-grid; }

  .topbar { padding: 12px 16px; gap: 8px; }
  .search kbd { display: none; }
  .page { padding: 0 16px 120px; }
  .page-head { padding: 24px 0 18px; }

  /* The "New task" button becomes a floating action button */
  .new-btn {
    position: fixed; right: 20px; bottom: calc(20px + env(safe-area-inset-bottom)); z-index: 30;
    width: 58px; height: 58px; padding: 0; margin: 0;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
  }
  .new-btn span { display: none; }
  .new-btn .icon { width: 24px; height: 24px; }

  /* Row actions are always visible on touch screens */
  .task-actions { opacity: 1 !important; }
}

@media (max-width: 560px) {
  .drawer-body { padding: 18px 16px 48px; }
}