:root {
  --bg: #f6f5f2;
  --surface: #ffffff;
  --text: #24231f;
  --text-muted: #6b6b64;
  --border: #e2e0d8;
  --accent: #3d4b8c;
  --accent-text: #ffffff;
  --danger: #c0564d;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1b1b1d;
    --surface: #242426;
    --text: #eeeeec;
    --text-muted: #a3a29c;
    --border: #38383a;
    --accent: #7c8ee0;
    --accent-text: #16161a;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  padding-bottom: 40px;
}

.topbar {
  padding: 20px 20px 12px;
  max-width: 560px;
  margin: 0 auto;
}

.topbar h1 {
  margin: 0;
  font-size: 1.3rem;
  color: var(--accent);
}

main {
  max-width: 560px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.section-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
}

.section-card h2 {
  margin: 0 0 12px;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.focus-card textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
  font-size: 1.15rem;
  font-family: inherit;
  background: var(--bg);
  color: var(--text);
  resize: vertical;
  min-height: 3.4em;
}

.focus-card textarea:placeholder-shown {
  font-size: 1rem;
  color: var(--text-muted);
}

.text-btn {
  background: none;
  border: none;
  color: var(--danger);
  font-size: 0.9rem;
  padding: 10px 4px;
  margin-top: 6px;
  cursor: pointer;
}

.text-btn:disabled {
  opacity: 0.4;
  cursor: default;
}

.add-form {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.add-form input {
  flex: 1;
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 1rem;
  background: var(--bg);
  color: var(--text);
}

.primary-btn {
  background: var(--accent);
  color: var(--accent-text);
  border: none;
  border-radius: 10px;
  padding: 12px 16px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}

.primary-btn:disabled {
  opacity: 0.5;
  cursor: default;
}

.promote-btn {
  width: 100%;
  margin-top: 16px;
}

.task-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.task-item {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  background: var(--bg);
}

.task-item.is-top {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, var(--surface));
}

.task-item .task-rank {
  font-size: 0.75rem;
  color: var(--text-muted);
  min-width: 1.4em;
}

.task-item.is-top .task-rank {
  color: var(--accent);
  font-weight: 700;
}

.task-item .task-text {
  flex: 1;
  min-width: 0;
  word-break: break-word;
  font-size: 1rem;
}

.task-item .task-actions {
  display: flex;
  gap: 2px;
}

.task-item button.icon-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.1rem;
  line-height: 1;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  cursor: pointer;
}

.task-item button.icon-btn:hover {
  background: var(--border);
}

.task-item button.icon-btn:disabled {
  opacity: 0.25;
  cursor: default;
}

.task-item button.icon-btn.danger {
  color: var(--danger);
}

.empty-hint {
  color: var(--text-muted);
  font-size: 0.9rem;
  text-align: center;
  margin: 8px 0;
}

.hidden { display: none !important; }

.banner {
  font-size: 0.8rem;
  padding: 8px 12px;
  border-radius: 8px;
  margin-top: 8px;
}

.banner-danger {
  background: color-mix(in srgb, var(--danger) 15%, var(--surface));
  color: var(--danger);
}

.loading-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  z-index: 50;
}

.loading-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.loading-error {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@media (max-width: 400px) {
  .add-form { flex-direction: column; }
  .add-form .primary-btn { width: 100%; }
}