:root {
  color-scheme: dark;
  --bg: #0b0d12;
  --panel: rgba(255,255,255,.08);
  --panel-strong: rgba(255,255,255,.12);
  --text: #f7f2e8;
  --muted: #a9b0bd;
  --line: rgba(255,255,255,.14);
  --accent: #ffcc66;
  --accent-2: #8fe3cf;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 15%, rgba(143,227,207,.25), transparent 28rem),
    radial-gradient(circle at 82% 12%, rgba(255,204,102,.2), transparent 24rem),
    linear-gradient(135deg, #0b0d12 0%, #141821 48%, #0b0d12 100%);
}

.login-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(340px, 440px);
  gap: 48px;
  align-items: center;
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.brand-mark {
  width: 64px;
  height: 64px;
  display: grid;
  place-items: center;
  border-radius: 22px;
  background: var(--accent);
  color: #17110a;
  font-weight: 900;
  font-size: 24px;
  box-shadow: 0 18px 55px rgba(255,204,102,.24);
}

.eyebrow {
  margin: 24px 0 10px;
  color: var(--accent-2);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .18em;
}

h1, h2, p { margin-top: 0; }
h1 {
  max-width: 680px;
  margin-bottom: 22px;
  font-size: clamp(42px, 7vw, 78px);
  line-height: .95;
  letter-spacing: -.06em;
}

.subcopy {
  max-width: 560px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.8;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 34px;
}

.chips span {
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255,255,255,.06);
  color: #dfe6ef;
}

.login-card {
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: 32px;
  background: linear-gradient(180deg, var(--panel-strong), var(--panel));
  box-shadow: 0 24px 90px rgba(0,0,0,.32);
  backdrop-filter: blur(22px);
}

.login-card h2 {
  margin-bottom: 8px;
  font-size: 34px;
  letter-spacing: -.04em;
}

.login-card p {
  color: var(--muted);
}

form {
  display: grid;
  gap: 18px;
  margin-top: 28px;
}

label span {
  display: block;
  margin-bottom: 8px;
  color: #d7dde8;
  font-size: 14px;
}

input {
  width: 100%;
  height: 52px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 16px;
  outline: none;
  background: rgba(5,7,12,.56);
  color: var(--text);
  font: inherit;
}

input:focus {
  border-color: rgba(143,227,207,.76);
  box-shadow: 0 0 0 4px rgba(143,227,207,.12);
}

button {
  height: 54px;
  margin-top: 4px;
  border: 0;
  border-radius: 17px;
  background: var(--accent);
  color: #17110a;
  font: inherit;
  font-weight: 900;
  cursor: pointer;
}

button:disabled {
  cursor: wait;
  opacity: .72;
}

.message {
  min-height: 22px;
  margin: 0;
  color: #ff9b9b;
}

@media (max-width: 820px) {
  .login-shell {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 34px 0;
  }
  h1 { font-size: 46px; }
  .login-card { padding: 26px; }
}