/* ── Login ── */
#login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  background: var(--bg);
}

.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 40px;
  width: 360px;
  text-align: center;
  box-shadow: 0 25px 50px var(--shadow);
}

.login-card h1 {
  font-size: 24px;
  margin-bottom: 8px;
}

.login-card p {
  color: var(--text2);
  margin-bottom: 24px;
}

.login-card input {
  width: 100%;
  margin-bottom: 16px;
}

.login-card input:focus {
  border-color: var(--primary);
}

.login-card button {
  width: 100%;
  padding: 12px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: background .2s;
}

.login-card button:hover {
  background: var(--primary-hover);
}

.error {
  color: var(--danger);
  font-size: 13px;
  margin-top: 12px;
  min-height: 20px;
}