* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: #f5f5f5; color: #333; }
.container { max-width: 600px; margin: 0 auto; padding: 20px; }

/* Nav */
nav { display: flex; justify-content: space-between; align-items: center; padding: 12px 20px; background: #1a73e8; color: #fff; }
nav .email { font-size: 14px; }
nav button { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,0.5); padding: 6px 14px; border-radius: 4px; cursor: pointer; font-size: 13px; }
nav button:hover { background: rgba(255,255,255,0.15); }

/* Auth */
#auth-section { display: flex; justify-content: center; align-items: center; min-height: 80vh; }
.auth-card { background: #fff; padding: 32px; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.1); width: 100%; max-width: 400px; }
.auth-card h2 { margin-bottom: 20px; text-align: center; }
.auth-card input { width: 100%; padding: 10px 12px; margin-bottom: 12px; border: 1px solid #ddd; border-radius: 4px; font-size: 14px; }
.auth-card .btn { width: 100%; padding: 10px; background: #1a73e8; color: #fff; border: none; border-radius: 4px; cursor: pointer; font-size: 15px; }
.auth-card .btn:hover { background: #1557b0; }
.auth-card .btn:disabled { background: #93b8f0; cursor: not-allowed; }
.auth-card .toggle { text-align: center; margin-top: 12px; font-size: 13px; color: #666; }
.auth-card .toggle .link-button { font-size: 13px; }
.error { color: #d93025; font-size: 13px; margin-bottom: 10px; text-align: center; }

/* Notes */
.add-form { background: #fff; padding: 16px; border-radius: 8px; box-shadow: 0 1px 4px rgba(0,0,0,0.08); margin-bottom: 16px; }
.add-form input, .add-form textarea { width: 100%; padding: 8px 12px; margin-bottom: 8px; border: 1px solid #ddd; border-radius: 4px; font-size: 14px; font-family: inherit; }
.add-form textarea { resize: vertical; min-height: 60px; }
.add-form .btn { padding: 8px 20px; background: #1a73e8; color: #fff; border: none; border-radius: 4px; cursor: pointer; font-size: 14px; }
.add-form .btn:disabled { background: #93b8f0; cursor: not-allowed; }
.add-form .error { margin-top: 8px; margin-bottom: 0; text-align: left; }
.note-card { background: #fff; padding: 16px; border-radius: 8px; box-shadow: 0 1px 4px rgba(0,0,0,0.08); margin-bottom: 10px; display: flex; justify-content: space-between; align-items: flex-start; }
.note-card .content { flex: 1; }
.note-card h3 { font-size: 15px; margin-bottom: 4px; }
.note-card p { font-size: 13px; color: #666; white-space: pre-wrap; }
.note-card .meta { font-size: 11px; color: #999; margin-top: 4px; }
.note-card .delete { background: none; border: none; color: #d93025; cursor: pointer; font-size: 18px; padding: 4px 8px; }
.note-card .delete:hover { background: #fce8e6; border-radius: 4px; }
.empty { text-align: center; color: #999; padding: 40px 0; }
.loading { text-align: center; color: #999; padding: 20px 0; }
[hidden] { display: none !important; }
.link-button { background: none; border: none; padding: 0; color: #1a73e8; cursor: pointer; font: inherit; }
.link-button:hover { text-decoration: underline; }