:root {
  --bg: #0b0e14;
  --panel: #141a25;
  --line: rgba(255, 255, 255, 0.12);
  --text: #f4f7ff;
  --muted: #9aa8c4;
  --accent: #2dd4bf;
  --danger: #fb7185;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Manrope", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 0% -10%, rgba(45, 212, 191, 0.2), transparent 45%),
    radial-gradient(circle at 100% 0%, rgba(59, 130, 246, 0.18), transparent 38%),
    linear-gradient(170deg, #090b10 0%, #0d1118 60%, #090c12 100%);
  padding: 20px 16px 28px;
}

.auth-shell {
  width: min(720px, 100%);
  margin: 0 auto;
  display: grid;
  gap: 12px;
}

.auth-head h1,
.auth-head p {
  margin: 0;
}

.auth-head p {
  color: var(--muted);
  margin-top: 4px;
}

.back-link {
  display: inline-block;
  margin-top: 8px;
  color: #9cfaf0;
}

.tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tabs a {
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
  background: var(--panel);
  padding: 7px 12px;
  font-size: 0.88rem;
}

.tabs a.active {
  border-color: rgba(45, 212, 191, 0.5);
  background: rgba(45, 212, 191, 0.16);
  color: #93f9ec;
}

.panel {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(20, 26, 38, 0.95), rgba(15, 20, 31, 0.95));
  padding: 14px;
}

.panel h2 {
  margin: 0 0 10px;
  font-size: 1.08rem;
}

.form-grid {
  display: grid;
  gap: 10px;
}

label {
  display: grid;
  gap: 6px;
  font-size: 0.86rem;
}

input {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 11px;
  font-size: 16px;
  background: #1a2232;
  color: var(--text);
}

button {
  appearance: none;
  border: 1px solid rgba(45, 212, 191, 0.5);
  border-radius: 999px;
  background: rgba(45, 212, 191, 0.14);
  color: #93f9ec;
  padding: 9px 12px;
  font-size: 0.86rem;
  font-weight: 700;
  width: fit-content;
  cursor: pointer;
}

.question {
  margin: 0;
  color: #d6e0f4;
  font-size: 0.9rem;
}

.alert {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 0.88rem;
}

.alert.success {
  border-color: rgba(45, 212, 191, 0.45);
  color: #96f8ec;
  background: rgba(45, 212, 191, 0.1);
}

.alert.error {
  border-color: rgba(251, 113, 133, 0.45);
  color: #ffd8df;
  background: rgba(251, 113, 133, 0.12);
}

.is-hidden {
  display: none;
}