* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: #f7f7f5;
  color: #222;
}
.app { max-width: 640px; margin: 0 auto; padding: 24px 16px 80px; }
header h1 { font-size: 20px; font-weight: 600; margin: 0 0 20px; color: #444; }
.quick-add {
  display: flex; gap: 8px; margin-bottom: 32px;
  background: white; border: 1px solid #e0e0dc; border-radius: 10px; padding: 10px;
}
.quick-add textarea {
  flex: 1; border: none; outline: none; resize: none;
  font-size: 15px; font-family: inherit; padding: 4px;
}
.quick-add button {
  align-self: flex-end; background: #2b2b2b; color: white; border: none;
  border-radius: 8px; padding: 8px 16px; font-size: 14px; cursor: pointer;
}
.quick-add button:hover { background: #444; }
.date-group { margin-bottom: 24px; }
.date-header {
  font-size: 13px; text-transform: uppercase; letter-spacing: 0.04em;
  color: #999; margin: 0 0 8px;
}
.entry {
  display: flex; gap: 10px; padding: 8px 0; border-bottom: 1px solid #eee;
  font-size: 15px; line-height: 1.4;
}
.entry-time { color: #aaa; font-size: 13px; flex-shrink: 0; padding-top: 1px; }
.entry-text { flex: 1; }
.tag.topic { color: #2563eb; font-weight: 500; }
.tag.person { color: #c2410c; font-weight: 500; }
.loading, .empty, .error { color: #999; text-align: center; padding: 40px 0; }

.login-page { display: flex; align-items: center; justify-content: center; min-height: 90vh; }
.login-form {
  display: flex; flex-direction: column; gap: 10px; width: 260px;
  background: white; border: 1px solid #e0e0dc; border-radius: 10px; padding: 20px;
}
.login-form input {
  padding: 10px; border: 1px solid #ddd; border-radius: 8px; font-size: 15px;
}
.login-form button {
  background: #2b2b2b; color: white; border: none; border-radius: 8px;
  padding: 10px; font-size: 14px; cursor: pointer;
}