:root {
  --bg: #070b14;
  --text: #f8fafc;
  --muted: #9aa7bd;
  --line: rgba(255, 255, 255, 0.14);
  --panel: rgba(255, 255, 255, 0.08);
  --accent: #7dd3fc;
  --accent-2: #8b5cf6;
  --danger: #fb7185;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100svh;
  background:
    radial-gradient(circle at 20% 10%, rgba(125, 211, 252, 0.24), transparent 32%),
    radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.22), transparent 30%),
    linear-gradient(145deg, #070b14, #111827);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

.is-hidden {
  display: none !important;
}

.auth-screen {
  min-height: 100svh;
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 28px;
  padding:
    max(24px, calc(env(safe-area-inset-top, 0px) + 18px))
    22px
    max(24px, calc(env(safe-area-inset-bottom, 0px) + 18px));
}

.brand {
  display: grid;
  gap: 10px;
  text-align: center;
}

.brand h1 {
  margin: 0;
  font-size: clamp(64px, 18vw, 118px);
  line-height: 0.9;
  font-weight: 950;
  letter-spacing: 0.04em;
  background: linear-gradient(135deg, #ffffff, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.brand p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  font-weight: 650;
}

.auth-card,
.session-card {
  width: min(440px, 100%);
  border: 1px solid var(--line);
  border-radius: 30px;
  padding: 18px;
  background: var(--panel);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.34), inset 0 1px 0 rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(22px) saturate(1.2);
  -webkit-backdrop-filter: blur(22px) saturate(1.2);
}

.auth-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 22px;
  padding: 5px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
}

.auth-tabs button {
  min-height: 44px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font-weight: 850;
}

.auth-tabs button.active {
  background: #ffffff;
  color: #0f172a;
}

.auth-form {
  display: none;
  gap: 16px;
}

.auth-form.active {
  display: grid;
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

label {
  display: grid;
  gap: 7px;
  color: rgba(255, 255, 255, 0.76);
  font-size: 13px;
  font-weight: 800;
}

input {
  width: 100%;
  min-height: 52px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 18px;
  padding: 0 15px;
  outline: none;
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
  font-size: 16px;
}

input:focus {
  border-color: rgba(125, 211, 252, 0.72);
  box-shadow: 0 0 0 4px rgba(125, 211, 252, 0.12);
}

.primary,
.secondary {
  min-height: 52px;
  border: 0;
  border-radius: 999px;
  padding: 0 18px;
  font-weight: 900;
}

.primary {
  margin-top: 4px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #06111d;
}

.secondary {
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
}

.form-message {
  min-height: 20px;
  margin: 0;
  color: var(--danger);
  text-align: center;
  font-size: 14px;
  font-weight: 750;
}

.session-card {
  display: grid;
  gap: 12px;
  text-align: center;
}

.session-card strong {
  font-size: 24px;
  font-weight: 950;
}

.session-card p {
  margin: 0;
  color: var(--muted);
}

@media (max-width: 420px) {
  .field-row {
    grid-template-columns: 1fr;
  }
}