:root {
  color-scheme: light;
  --bg: #f4f6f5;
  --panel: #ffffff;
  --text: #17211f;
  --muted: #66736f;
  --line: #d8dfdc;
  --accent: #2f6f73;
  --accent-dark: #24575a;
  --danger: #9f332e;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-panel {
  width: min(100%, 410px);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
  box-shadow: 0 16px 40px rgba(20, 32, 30, 0.08);
}

.brand {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 22px;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 7px;
  background: var(--accent);
  color: #ffffff;
  font-weight: 800;
}

.brand strong,
.brand span {
  display: block;
}

.brand span {
  color: var(--muted);
  font-size: 13px;
  margin-top: 2px;
}

.login-form {
  display: grid;
  gap: 14px;
}

label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

input {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 9px 11px;
  font-size: 15px;
  color: var(--text);
  background: #ffffff;
}

input:focus {
  border-color: var(--accent);
  outline: 2px solid rgba(47, 111, 115, 0.18);
}

button {
  min-height: 42px;
  border: 0;
  border-radius: 7px;
  background: var(--accent);
  color: #ffffff;
  font-weight: 800;
  cursor: pointer;
}

button:hover {
  background: var(--accent-dark);
}

button:disabled {
  cursor: wait;
  opacity: 0.7;
}

.message {
  min-height: 20px;
  margin: 0;
  color: var(--danger);
  font-size: 13px;
  font-weight: 700;
}