:root {
  --bg: #0f0f13;
  --surface: #1a1a24;
  --card: #1e1e2a;
  --card-hover: rgba(37,37,53,0.8);
  --accent: #4f46e5;
  --accent-hover: #6366f1;
  --text: #e2e8f0;
  --text-muted: #64748b;
  --border: #2a2a3a;
  --danger: #ef4444;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  max-width: 680px;
  margin: 0 auto;
}

.hidden { display: none !important; }

/* ── Main page ── */
#page-main header {
  padding: 1.25rem 1.25rem 0;
}

#page-main header h1 {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-muted);
}

#page-main header h1 span { color: var(--accent); }

/* ── Capture bar ── */
#capture-bar {
  padding: 1rem 1rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

#capture-input {
  width: 100%;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.875rem 1rem;
  font-size: 1rem;
  font-family: inherit;
  color: var(--text);
  resize: none;
  line-height: 1.6;
  outline: none;
  transition: border-color 0.15s;
  min-height: 88px;
}

#capture-input:focus { border-color: var(--accent); }
#capture-input::placeholder { color: var(--text-muted); }

#btn-add {
  align-self: flex-end;
  padding: 0.5rem 1.5rem;
  font-size: 0.9375rem;
}

/* ── Tabs ── */
#tabs {
  display: flex;
  padding: 1rem 1rem 0;
  border-bottom: 1px solid var(--border);
  margin-top: 0.75rem;
}

.tab {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.5rem 1rem 0.625rem;
  transition: color 0.15s, border-color 0.15s;
  margin-bottom: -1px;
}

.tab:hover { color: var(--text); }
.tab.active { color: var(--text); border-bottom-color: var(--accent); }

/* ── Tab panels ── */
main { padding: 0.75rem 1rem 5rem; }

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ── Notes list ── */
#notes-list { display: flex; flex-direction: column; gap: 0.5rem; }

.note-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.875rem 1rem;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.note-card:hover { border-color: var(--accent); background: var(--card-hover); }

.note-card-title {
  font-size: 0.9375rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 0.25rem;
}

.note-card-content {
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--text-muted);
  white-space: pre-wrap;
  word-break: break-word;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.note-card-date {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

/* ── To-Do list ── */
#todo-header {
  display: flex;
  justify-content: flex-end;
  padding: 0.5rem 0 0.25rem;
}

#todo-list { list-style: none; display: flex; flex-direction: column; gap: 0.375rem; }

.todo-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.todo-item input[type="checkbox"] {
  margin-top: 2px;
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--accent);
  flex-shrink: 0;
}

.todo-item span { font-size: 0.9375rem; line-height: 1.5; }
.todo-item.done span { text-decoration: line-through; color: var(--text-muted); }

/* ── Empty states ── */
.empty-state {
  padding: 3rem 1rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.empty-state .muted { font-size: 0.8rem; }

/* ── Note page ── */
#page-note {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

.note-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.875rem 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 10;
}

.btn-back {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 0.9375rem;
  font-weight: 500;
  cursor: pointer;
  padding: 0.25rem 0;
}

.btn-back:hover { color: var(--accent-hover); }

.note-header-actions { display: flex; gap: 0.5rem; }

#note-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
  padding: 0.625rem 1.25rem 0;
}

#note-title {
  background: transparent;
  border: none;
  outline: none;
  padding: 1rem 1.25rem 0.25rem;
  font-size: 1.5rem;
  font-weight: 700;
  font-family: inherit;
  color: var(--text);
  width: 100%;
  letter-spacing: -0.02em;
}

#note-title::placeholder { color: var(--border); }

#note-body {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  padding: 0.5rem 1.25rem 6rem;
  font-size: 1rem;
  font-family: inherit;
  color: var(--text);
  resize: none;
  line-height: 1.75;
  width: 100%;
}

#note-toolbar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  max-width: 680px;
  margin: 0 auto;
  display: flex;
  gap: 0.75rem;
  padding: 0.875rem 1rem;
  padding-bottom: calc(0.875rem + env(safe-area-inset-bottom));
}

#note-toolbar .btn {
  flex: 1;
  font-size: 1rem;
  padding: 0.75rem;
}

/* ── Buttons ── */
.btn {
  padding: 0.5rem 1rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 500;
  transition: background 0.15s;
}

.btn-sm { padding: 0.375rem 0.75rem; font-size: 0.8125rem; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-ghost { background: transparent; color: var(--text-muted); border: 1px solid var(--border); }
.btn-ghost:hover { color: var(--text); background: var(--card); }
.btn-danger { background: transparent; color: var(--danger); border: 1px solid var(--border); }
.btn-danger:hover { background: var(--danger); color: #fff; }

/* ── Toast ── */
.toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
  opacity: 0;
  transition: opacity 0.2s, transform 0.2s;
  pointer-events: none;
  z-index: 100;
  white-space: nowrap;
}

.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }