:root {
  color-scheme: dark;
  --color-background: #0a0a0b;
  --color-surface: #111113;
  --color-surface-raised: #161619;
  --color-border: rgba(244, 244, 245, 0.12);
  --color-text-primary: #f4f4f5;
  --color-text-secondary: #a1a1aa;
  --color-text-muted: #71717a;
  --color-accent: #3b82f6;
  --color-accent-strong: #22d3ee;
  --color-error: #ef4444;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 18% 16%, rgba(34, 211, 238, 0.18), transparent 32rem),
    radial-gradient(circle at 82% 84%, rgba(168, 85, 247, 0.16), transparent 34rem),
    var(--color-background);
  color: var(--color-text-primary);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input {
  font: inherit;
}

.login-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 440px);
  gap: 48px;
  align-items: center;
  width: min(1120px, calc(100vw - 48px));
  min-height: 100vh;
  margin: 0 auto;
  padding: 48px 0;
}

.brand-panel {
  display: grid;
  gap: 18px;
}

.wordmark {
  font-size: clamp(52px, 8vw, 104px);
  line-height: 0.92;
  font-weight: 700;
  letter-spacing: 0;
}

.brand-copy {
  max-width: 560px;
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 18px;
  line-height: 1.6;
}

.status-line {
  display: flex;
  gap: 10px;
  margin-top: 18px;
}

.status-line span {
  display: block;
  width: 56px;
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--color-accent-strong), var(--color-accent));
  opacity: 0.72;
}

.status-line span:nth-child(2) {
  width: 28px;
  opacity: 0.42;
}

.status-line span:nth-child(3) {
  width: 14px;
  opacity: 0.28;
}

.login-panel {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: 16px;
  background: rgba(17, 17, 19, 0.86);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
  padding: 32px;
}

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

.section-label {
  margin: 0 0 10px;
  color: var(--color-accent-strong);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: 30px;
  line-height: 1.15;
  font-weight: 650;
  letter-spacing: 0;
}

.subtitle {
  margin: 10px 0 0;
  color: var(--color-text-secondary);
  font-size: 14px;
  line-height: 1.55;
}

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

label {
  color: var(--color-text-secondary);
  font-size: 13px;
  font-weight: 500;
}

input {
  width: 100%;
  height: 44px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface-raised);
  color: var(--color-text-primary);
  padding: 0 12px;
  outline: none;
}

input:focus {
  border-color: rgba(34, 211, 238, 0.8);
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.12);
}

.error-message {
  min-height: 20px;
  margin: 2px 0 0;
  color: var(--color-error);
  font-size: 13px;
  line-height: 1.45;
}

button {
  height: 44px;
  border: 0;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--color-accent-strong), var(--color-accent));
  color: #ffffff;
  cursor: pointer;
  font-size: 14px;
  font-weight: 650;
}

button:hover {
  filter: brightness(1.05);
}

button:focus-visible {
  outline: 2px solid rgba(34, 211, 238, 0.82);
  outline-offset: 3px;
}

button:disabled {
  cursor: wait;
  opacity: 0.68;
}

@media (max-width: 760px) {
  .login-shell {
    grid-template-columns: 1fr;
    gap: 32px;
    width: min(100vw - 32px, 440px);
    align-content: center;
  }

  .wordmark {
    font-size: 52px;
  }

  .brand-copy {
    font-size: 15px;
  }

  .login-panel {
    padding: 24px;
  }
}