:root {
  --bg: #0a0d10;
  --panel: rgba(18, 22, 27, 0.96);
  --line: rgba(255, 255, 255, 0.08);
  --text: #eef2f6;
  --muted: #95a0ac;
  --accent: #80e2ff;
  --accent-2: #57b9ff;
  --danger: #ff8d8d;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.42);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: "Segoe UI", "Helvetica Neue", sans-serif;
  background:
    radial-gradient(circle at top right, rgba(87, 185, 255, 0.12), transparent 18%),
    radial-gradient(circle at bottom left, rgba(128, 226, 255, 0.08), transparent 20%),
    linear-gradient(180deg, #0c1014 0%, #06080a 100%);
}

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 44px 44px;
  opacity: 0.32;
}

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

.panel {
  width: min(100%, 460px);
  padding: 32px;
  border-radius: 28px;
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(128, 226, 255, 0.08);
  border: 1px solid rgba(128, 226, 255, 0.16);
  color: var(--accent);
  font: 700 12px/1 "Consolas", "SFMono-Regular", monospace;
  letter-spacing: 0.05em;
  text-transform: lowercase;
}

h1,
p {
  margin: 0;
}

h1 {
  margin-top: 18px;
  font-size: clamp(34px, 6vw, 48px);
  line-height: 0.96;
  letter-spacing: -0.03em;
}

.lead {
  margin-top: 16px;
  color: var(--muted);
  line-height: 1.6;
  font-size: 16px;
}

.login-form {
  margin-top: 26px;
  display: grid;
  gap: 14px;
}

label {
  display: grid;
  gap: 8px;
}

label span {
  color: #c6ced7;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

input,
button {
  font: inherit;
}

input {
  min-height: 52px;
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,0.08);
  background: #0c1014;
  color: var(--text);
  padding: 0 16px;
}

button {
  margin-top: 6px;
  min-height: 54px;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #031018;
  font-weight: 800;
  cursor: pointer;
}

.notice {
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid rgba(255, 141, 141, 0.18);
  background: rgba(255, 141, 141, 0.06);
  color: var(--danger);
  line-height: 1.5;
  font-size: 14px;
}

.footer-row {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid rgba(255,255,255,0.06);
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: #788390;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

@media (max-width: 520px) {
  .panel {
    padding: 22px;
    border-radius: 22px;
  }

  .footer-row {
    flex-direction: column;
  }
}