:root {
  color-scheme: light;
  --ink: #172033;
  --muted: #697386;
  --line: #d9dee8;
  --panel: #ffffff;
  --field: #f7f9fc;
  --accent: #176b57;
  --accent-dark: #10503f;
  --warning-bg: #fff4df;
  --warning-line: #f1cc8f;
  --warning-ink: #6a4510;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(135deg, rgba(23, 107, 87, 0.12), rgba(67, 119, 183, 0.12)),
    #eef2f6;
}

.shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(320px, 1fr);
}

.brand-panel {
  display: flex;
  min-height: 100%;
  padding: clamp(32px, 7vw, 88px);
  flex-direction: column;
  justify-content: center;
  background: #172033;
  color: #ffffff;
}

.brand-mark {
  width: 64px;
  height: 64px;
  display: grid;
  place-items: center;
  margin-bottom: 32px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 8px;
  font-weight: 750;
}

h1,
h2,
p {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  max-width: 520px;
  font-size: clamp(42px, 7vw, 76px);
  line-height: 0.95;
}

.brand-panel p {
  max-width: 420px;
  margin-top: 22px;
  color: rgba(255, 255, 255, 0.76);
  font-size: 18px;
  line-height: 1.6;
}

.login-panel {
  display: flex;
  width: min(100%, 520px);
  margin: auto;
  padding: 40px;
  flex-direction: column;
  justify-content: center;
  background: var(--panel);
  border: 1px solid rgba(23, 32, 51, 0.08);
  border-radius: 8px;
  box-shadow: 0 24px 80px rgba(23, 32, 51, 0.12);
}

.panel-heading {
  margin-bottom: 28px;
}

.eyebrow {
  margin-bottom: 8px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
}

h2 {
  font-size: 28px;
  line-height: 1.2;
}

form {
  display: grid;
  gap: 12px;
}

label {
  color: #2a3448;
  font-size: 14px;
  font-weight: 650;
}

input {
  width: 100%;
  height: 48px;
  margin-bottom: 10px;
  padding: 0 14px;
  color: var(--ink);
  background: var(--field);
  border: 1px solid var(--line);
  border-radius: 8px;
  font: inherit;
}

input:focus {
  outline: 3px solid rgba(23, 107, 87, 0.18);
  border-color: var(--accent);
  background: #ffffff;
}

button {
  height: 50px;
  margin-top: 8px;
  border: 0;
  border-radius: 8px;
  color: #ffffff;
  background: var(--accent);
  font: inherit;
  font-weight: 750;
  cursor: pointer;
}

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

button:disabled {
  cursor: not-allowed;
  background: #9aa4b2;
}

.alert {
  margin-bottom: 18px;
  padding: 12px 14px;
  color: var(--warning-ink);
  background: var(--warning-bg);
  border: 1px solid var(--warning-line);
  border-radius: 8px;
  font-size: 14px;
  line-height: 1.45;
}

.alert.muted {
  color: #465166;
  background: #eef2f6;
  border-color: #d9dee8;
}

@media (max-width: 820px) {
  .shell {
    grid-template-columns: 1fr;
  }

  .brand-panel {
    min-height: 300px;
  }

  .login-panel {
    width: calc(100% - 32px);
    margin: 16px auto 32px;
    padding: 28px;
  }
}