:root {
  color-scheme: dark;
  --bg: #090a0a;
  --panel: rgba(20, 21, 22, 0.76);
  --panel-border: rgba(255, 255, 255, 0.10);
  --text: #f5f5f3;
  --muted: #a8a8a8;
  --soft: #d8d8d8;
  --button: #f4f4f0;
  --button-text: #090a0a;
  --button-hover: #c9c9c5;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    radial-gradient(circle at 50% 18%, rgba(180, 180, 180, 0.10), transparent 34rem),
    radial-gradient(circle at 80% 78%, rgba(130, 130, 130, 0.08), transparent 28rem),
    var(--bg);
  background-size: 72px 72px, 72px 72px, auto, auto, auto;
}

.shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px;
}

.hero-card {
  width: min(920px, 100%);
  min-height: 760px;
  display: grid;
  place-items: center;
  gap: 28px;
  padding: clamp(32px, 6vw, 72px);
  text-align: center;
  border: 1px solid var(--panel-border);
  border-radius: 36px;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.055), rgba(255,255,255,0.015)),
    var(--panel);
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(14px);
}

.logo-wrap {
  width: min(640px, 92vw);
  margin-inline: auto;
}

.brand-logo {
  display: block;
  width: 100%;
  height: auto;
  filter: drop-shadow(0 24px 42px rgba(0, 0, 0, 0.45));
}

.copy {
  max-width: 680px;
  margin-inline: auto;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(2.5rem, 7vw, 5.9rem);
  line-height: 0.95;
  letter-spacing: -0.075em;
  text-transform: uppercase;
}

.subhead {
  max-width: 570px;
  margin: 22px auto 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.8vw, 1.18rem);
  line-height: 1.65;
}

.login-panel {
  width: min(420px, 100%);
  padding: 24px;
  border: 1px solid var(--panel-border);
  border-radius: 24px;
  background: rgba(5, 6, 6, 0.48);
}

.panel-title {
  margin: 0;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.panel-copy {
  margin: 8px 0 20px;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.5;
}

.primary-button {
  display: inline-flex;
  width: 100%;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 18px;
  border-radius: 999px;
  background: var(--button);
  color: var(--button-text);
  text-decoration: none;
  font-size: 0.98rem;
  font-weight: 850;
  letter-spacing: -0.01em;
  transition: transform 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

.primary-button:hover {
  background: var(--button-hover);
  transform: translateY(-1px);
  box-shadow: 0 16px 34px rgba(0, 0, 0, 0.35);
}

.primary-button:focus-visible {
  outline: 3px solid rgba(255, 255, 255, 0.65);
  outline-offset: 4px;
}

.small-note {
  margin: 16px 0 0;
  color: #7f7f7f;
  font-size: 0.82rem;
}

@media (max-width: 640px) {
  .shell {
    padding: 18px;
  }

  .hero-card {
    min-height: auto;
    border-radius: 26px;
  }

  .logo-wrap {
    width: min(420px, 100%);
  }
}