:root {
  --brand: #e91e8c;
  --brand-2: #8b5cf6;
  --brand-grad: linear-gradient(135deg, #e91e8c 0%, #8b5cf6 100%);
  --bg: #0a0a0f;
  --surface: #13131a;
  --surface-2: #1c1c26;
  --border: rgba(255, 255, 255, 0.1);
  --text: #f4f4f8;
  --muted: #9a9ab0;
  --danger: #f87171;
  --ok: #34d399;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  font-family: "Plus Jakarta Sans", Inter, system-ui, sans-serif;
  background:
    radial-gradient(900px 500px at 10% -10%, rgba(233, 30, 140, 0.22), transparent 55%),
    radial-gradient(800px 480px at 100% 0%, rgba(139, 92, 246, 0.18), transparent 50%),
    var(--bg);
  color: var(--text);
}

body {
  display: grid;
  place-items: center;
  padding: 24px 16px;
}

.login-shell {
  width: min(420px, 100%);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
}

.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: var(--brand-grad);
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 18px;
  box-shadow: 0 10px 28px rgba(233, 30, 140, 0.35);
}

.brand-text strong {
  display: block;
  font-size: 18px;
  letter-spacing: -0.02em;
}

.brand-text span {
  font-size: 12px;
  color: var(--muted);
}

.login-card {
  background: rgba(19, 19, 26, 0.92);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 28px 24px 22px;
  backdrop-filter: blur(10px);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

.login-card h1 {
  margin: 0 0 6px;
  font-size: 24px;
  letter-spacing: -0.03em;
}

.login-card .sub {
  margin: 0 0 22px;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.45;
}

.tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  padding: 4px;
  background: var(--surface-2);
  border-radius: 12px;
  margin-bottom: 18px;
}

.tab {
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-weight: 700;
  font-size: 13px;
  padding: 10px;
  border-radius: 10px;
  cursor: pointer;
}

.tab.active {
  background: var(--brand-grad);
  color: #fff;
}

.field {
  margin-bottom: 14px;
}

.field label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  color: var(--muted);
  margin-bottom: 6px;
}

.field input {
  width: 100%;
  border: 1px solid var(--border);
  background: #0d0d14;
  color: var(--text);
  border-radius: 12px;
  padding: 12px 14px;
  font: inherit;
  font-size: 14px;
  outline: none;
}

.field input:focus {
  border-color: rgba(233, 30, 140, 0.7);
  box-shadow: 0 0 0 3px rgba(233, 30, 140, 0.15);
}

.hint {
  font-size: 11.5px;
  color: var(--muted);
  margin: -6px 0 14px;
}

.btn-primary {
  width: 100%;
  border: 0;
  border-radius: 12px;
  padding: 13px 16px;
  font: inherit;
  font-weight: 800;
  font-size: 14px;
  color: #fff;
  background: var(--brand-grad);
  cursor: pointer;
  box-shadow: 0 10px 24px rgba(233, 30, 140, 0.3);
}

.btn-primary:disabled {
  opacity: 0.55;
  cursor: wait;
}

.msg {
  min-height: 20px;
  margin-top: 14px;
  font-size: 13px;
  font-weight: 600;
}

.msg.error { color: var(--danger); }
.msg.ok { color: var(--ok); }

.panel[hidden] { display: none !important; }

.footer-note {
  margin-top: 16px;
  text-align: center;
  font-size: 12px;
  color: var(--muted);
}