:root {
  --bg: #f6f0e8;
  --panel: #ffffff;
  --line: #e8d8c3;
  --text: #3f2d20;
  --muted: #7d6959;
  --accent: #6c3f20;
  --danger: #b64848;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Poppins", sans-serif;
  background: radial-gradient(circle at top right, #fff7ea 0%, var(--bg) 55%);
  color: var(--text);
}

.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 16px;
}

.login-card {
  width: min(440px, 100%);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: 0 18px 42px rgba(48, 33, 22, 0.12);
  padding: 20px;
}

h1 {
  margin: 0;
  font-size: 1.35rem;
}

p {
  margin: 8px 0 14px;
  color: var(--muted);
}

label {
  display: block;
  margin: 10px 0 6px;
  font-size: 0.9rem;
  color: var(--muted);
}

input {
  width: 100%;
  padding: 11px 12px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #fff;
}

button {
  width: 100%;
  margin-top: 14px;
  padding: 11px 14px;
  border: none;
  border-radius: 10px;
  font-weight: 700;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
}

.error {
  margin-bottom: 10px;
  padding: 10px;
  border-radius: 10px;
  background: #fff1f1;
  border: 1px solid #f1b0b0;
  color: var(--danger);
  font-size: 0.9rem;
}

.back-link {
  display: inline-block;
  margin-top: 12px;
  color: var(--accent);
  font-weight: 600;
}

.hint {
  margin-top: 10px;
  font-size: 0.78rem;
  color: var(--muted);
}