:root {
  --bg: #0f1423;
  --bg-accent: #1d2948;
  --panel: rgba(255, 255, 255, 0.96);
  --panel-dark: rgba(18, 24, 41, 0.86);
  --text: #1a2032;
  --muted: #72809f;
  --line: rgba(113, 130, 170, 0.2);
  --primary: #3767f7;
  --primary-dark: #2147b8;
  --shadow: 0 28px 60px rgba(8, 13, 25, 0.28);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: "Plus Jakarta Sans", "Segoe UI", sans-serif;
}

.auth-body {
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(78, 197, 241, 0.24), transparent 28%),
    radial-gradient(circle at bottom right, rgba(55, 103, 247, 0.32), transparent 30%),
    linear-gradient(160deg, var(--bg) 0%, var(--bg-accent) 100%);
  color: #fff;
}

.auth-shell {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) minmax(320px, 440px);
  gap: 24px;
  width: min(1040px, calc(100% - 32px));
  margin: 0 auto;
  min-height: 100vh;
  align-items: center;
}

.auth-card {
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.auth-card-copy {
  padding: 42px;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.auth-card-copy h1 {
  margin: 14px 0 14px;
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  line-height: 0.96;
  letter-spacing: -0.05em;
}

.auth-card-copy p {
  max-width: 46ch;
  color: rgba(255, 255, 255, 0.76);
  font-size: 1rem;
  line-height: 1.7;
}

.auth-kicker {
  display: inline-flex;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.auth-features {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.auth-features span {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.84);
}

.auth-card-form {
  padding: 28px;
  background: var(--panel);
  color: var(--text);
}

.auth-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 22px;
  padding: 6px;
  border-radius: 18px;
  background: #eef3ff;
}

.auth-tabs.auth-tabs-single {
  grid-template-columns: 1fr;
}

.auth-tab {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  border-radius: 12px;
  text-decoration: none;
  color: var(--muted);
  font-weight: 700;
}

.auth-tab.is-active {
  background: #fff;
  color: var(--text);
  box-shadow: 0 10px 24px rgba(55, 103, 247, 0.12);
}

.auth-form {
  display: grid;
  gap: 16px;
}

.auth-form label {
  display: grid;
  gap: 8px;
}

.auth-form span {
  font-size: 0.88rem;
  color: #4f5a76;
  font-weight: 700;
}

.auth-form input {
  width: 100%;
  min-height: 48px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #f8faff;
  color: var(--text);
}

.auth-submit {
  min-height: 50px;
  border: 0;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-weight: 800;
  letter-spacing: 0.01em;
}

.auth-feedback {
  min-height: 24px;
  margin: 16px 2px 0;
  color: #d63a63;
  font-size: 0.9rem;
}

.auth-feedback.is-success {
  color: #10885f;
}

@media (max-width: 900px) {
  .auth-shell {
    grid-template-columns: 1fr;
    width: min(560px, calc(100% - 24px));
    padding: 24px 0;
  }

  .auth-card-copy,
  .auth-card-form {
    padding: 24px;
  }
}