:root {
  --bg: #f5f6fa;
  --text: #2f3640;
  --card: #ffffff;
}

body.dark {
  --bg: #1e272e;
  --text: #f5f6fa;
  --card: #2f3640;
}

body {
  margin: 0;
  font-family: system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.header {
  display: flex;
  justify-content: space-between;
  padding: 16px;
  background: var(--card);
}

.container {
  max-width: 800px;
  margin: 32px auto;
  padding: 0 16px;
}

.card {
  background: var(--card);
  padding: 20px;
  border-radius: 8px;
  margin-bottom: 20px;
}

input {
  width: 100%;
  padding: 10px;
  margin-bottom: 10px;
}

button {
  padding: 10px 16px;
  cursor: pointer;
}

.error {
  color: red;
  font-size: 14px;
}

/* Modal */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-content {
  background: var(--card);
  padding: 20px;
  border-radius: 8px;
}

.hidden {
  display: none;
}