:root {
  color-scheme: light dark;
  --bg: #f5f6fa;
  --surface: #ffffff;
  --text: #1c1e21;
  --muted: #6b7280;
  --accent: #4f46e5;
  --accent-active: #dc2626;
  --border: #e5e7eb;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16171d;
    --surface: #22242c;
    --text: #f0f0f2;
    --muted: #9aa0ab;
    --border: #33353f;
  }
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html, body {
  height: 100%;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
}

.app {
  max-width: 480px;
  margin: 0 auto;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  position: relative;
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  border-bottom: 1px solid var(--border);
}

.header h1 {
  font-size: 18px;
  margin: 0;
}

.icon-btn {
  background: none;
  border: none;
  font-size: 20px;
  color: var(--text);
  cursor: pointer;
  padding: 4px 8px;
}

.editor {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 16px;
  gap: 12px;
}

#noteText {
  flex: 1;
  min-height: 40vh;
  resize: none;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  color: var(--text);
  padding: 14px;
  font-size: 17px;
  line-height: 1.6;
}

#noteText:focus {
  outline: 2px solid var(--accent);
}

.status {
  text-align: center;
  font-size: 13px;
  color: var(--muted);
  min-height: 18px;
}

.controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.mic-btn {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: none;
  background: var(--accent);
  color: #fff;
  font-size: 26px;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.35);
  transition: background 0.15s, transform 0.15s;
}

.mic-btn.recording {
  background: var(--accent-active);
  transform: scale(1.08);
  animation: pulse 1.4s infinite;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(220, 38, 38, 0.45); }
  70% { box-shadow: 0 0 0 16px rgba(220, 38, 38, 0); }
  100% { box-shadow: 0 0 0 0 rgba(220, 38, 38, 0); }
}

.primary-btn, .secondary-btn {
  border: none;
  border-radius: 10px;
  padding: 12px 18px;
  font-size: 15px;
  cursor: pointer;
}

.primary-btn {
  background: var(--accent);
  color: #fff;
}

.secondary-btn {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
}

.list-view {
  position: absolute;
  inset: 0;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  padding: 16px;
}

.list-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.list-header h2 {
  font-size: 17px;
  margin: 0;
}

.note-list {
  list-style: none;
  margin: 0;
  padding: 0;
  overflow-y: auto;
  flex: 1;
}

.note-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  margin-bottom: 10px;
  cursor: pointer;
}

.note-item .note-preview {
  font-size: 14px;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.note-item .note-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 6px;
}

.note-item .note-date {
  font-size: 12px;
  color: var(--muted);
}

.note-item .delete-btn {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 13px;
  cursor: pointer;
}

.empty-hint {
  text-align: center;
  color: var(--muted);
  margin-top: 40px;
  font-size: 14px;
}