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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: #1a1a1a;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  padding: 64px 16px;
}

[data-app].nav, [data-app] .nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 32px;
}

[data-app].content, [data-app] .content {
  background: white;
  padding: 32px 48px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  font-size: 16px;
  width: 480px;
}

[data-login].login, [data-login] .login {
  margin-top: 100px;
  background: #fff;
  padding: 32px 48px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  font-size: 16px;
  min-width: 280px;
}

h2[data-login], [data-login] h2 {
  margin-bottom: 20px;
}

[data-login].login-form, [data-login] .login-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

[data-login].form-group, [data-login] .form-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

[data-login].form-group label, [data-login] .form-group label {
  font-size: 14px;
  font-weight: 600;
  color: #555;
}

[data-login].form-group input, [data-login] .form-group input {
  padding: 8px 12px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 15px;
  transition: border-color 0.2s;
}

[data-login].form-group input:focus, [data-login] .form-group input:focus {
  outline: none;
  border-color: #888;
}

[data-login].divider, [data-login] .divider {
  text-align: center;
  font-size: 13px;
  color: #aaa;
}

button[data-login], [data-login] button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px;
  background: #333;
  color: #fff;
  border: none;
  border-radius: 4px;
  font-size: 15px;
  cursor: pointer;
  transition: background 0.2s;
}

button[data-login]:hover, [data-login] button:hover {
  background: #555;
}

a[data-nav], [data-nav] a {
  text-decoration: none;
  color: #555;
  padding: 8px 16px;
  border-radius: 4px;
  transition:
    background 0.2s,
    color 0.2s;
}

a[data-nav]:hover, [data-nav] a:hover {
  background: #e0e0e0;
  color: #111;
}

a[data-nav].selected, [data-nav] a.selected {
  background: #333;
  color: #fff;
}

[data-todo].del, [data-todo] .del {
  background: transparent;
  border: none;
  color: #999;
  padding: 0.2rem 0.4rem;
  font-size: 0.85rem;
  cursor: pointer;
}

[data-todo].del:hover, [data-todo] .del:hover {
  color: #dc2626;
  background: transparent;
}

h1[data-todos], [data-todos] h1 {
  font-size: 2rem;
  margin-bottom: 0.25rem;
}

[data-todos].stack, [data-todos] .stack {
  color: #888;
  font-size: 0.8rem;
  margin-bottom: 1.5rem;
}

form[data-todos], [data-todos] form {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

input[data-todos]:not([type='checkbox']), [data-todos] input:not([type='checkbox']) {
  flex: 1;
  padding: 0.5rem 0.75rem;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 1rem;
}

button[data-todos][type='submit'], [data-todos] button[type='submit'] {
  padding: 0.5rem 1rem;
  border: none;
  border-radius: 6px;
  background: #3b82f6;
  color: white;
  font-size: 1rem;
  cursor: pointer;
}

button[data-todos][type='submit']:hover, [data-todos] button[type='submit']:hover {
  background: #2563eb;
}

[data-todos].hint, [data-todos] .hint {
  color: #888;
  font-style: italic;
}

[data-todos].hint.error, [data-todos] .hint.error {
  color: #dc2626;
}

ul[data-todos], [data-todos] ul {
  list-style: none;
}

li[data-todos], [data-todos] li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0.5rem;
  border-bottom: 1px solid #eee;
}

li[data-todos] span, [data-todos] li span {
  flex: 1;
}

li[data-todos].done span, [data-todos] li.done span {
  text-decoration: line-through;
  color: #aaa;
}

[data-usermenu].user-menu, [data-usermenu] .user-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}

[data-usermenu].email, [data-usermenu] .email {
  font-size: 0.85rem;
  color: #666;
}

button[data-usermenu], [data-usermenu] button {
  padding: 4px 12px;
  border: 1px solid #ccc;
  border-radius: 4px;
  background: transparent;
  color: #555;
  font-size: 0.85rem;
  cursor: pointer;
}

button[data-usermenu]:hover, [data-usermenu] button:hover {
  border-color: #888;
  color: #111;
}