:root {
  --teal: #0bafaf;
  --teal-dark: #06776c;
  --ink: #1b1b1b;
  --muted: #666;
  --line: #d4d4d4;
  --page: #f5f5f5;
  --card: #ffffff;
  --error: #b3261e;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--page);
  color: var(--ink);
  font-family: Verdana, Geneva, "DejaVu Sans", sans-serif;
}

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

.card {
  width: 100%;
  max-width: 380px;
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.08);
}

.card-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 20px;
  background: var(--teal);
  color: #fff;
}

.card-head h1 {
  margin: 0;
  font-size: 17px;
  font-weight: bold;
  letter-spacing: 0.2px;
}

.card-head p {
  margin: 3px 0 0;
  font-size: 11px;
  opacity: 0.9;
}

.card-body {
  display: flex;
  flex-direction: column;
  padding: 22px 20px 24px;
}

label {
  font-size: 12px;
  color: var(--muted);
  margin: 12px 0 5px;
}

input {
  font: inherit;
  font-size: 14px;
  padding: 9px 10px;
  border: 1px solid #b9b9b9;
  border-radius: 2px;
  background: #fff;
  color: var(--ink);
}

input:focus {
  outline: 2px solid var(--teal);
  outline-offset: -1px;
  border-color: var(--teal);
}

button {
  margin-top: 22px;
  padding: 10px 12px;
  font: inherit;
  font-size: 14px;
  font-weight: bold;
  color: #fff;
  background: var(--teal-dark);
  border: 0;
  border-radius: 2px;
  cursor: pointer;
}

button:hover { background: #055e56; }
button:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }

.msg {
  margin: 0 0 6px;
  padding: 9px 10px;
  font-size: 12px;
  line-height: 1.4;
  border-left: 3px solid var(--error);
  background: #fbeaea;
  color: var(--error);
}

.msg.info {
  border-left-color: var(--teal-dark);
  background: #e8edda;
  color: var(--teal-dark);
}