/* ── Vector CTF — Auth Page ── */
.auth-body {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at center, #0d1520 0%, var(--bg-dark) 70%);
  overflow: auto;
}

.auth-card {
  width: 420px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  padding: 40px;
  position: relative;
}

.auth-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--neon-cyan), transparent);
}

.auth-logo {
  text-align: center;
  margin-bottom: 32px;
}

.auth-logo h1 {
  font-size: 28px;
  font-weight: 800;
  letter-spacing: 6px;
  color: var(--neon-cyan);
  text-shadow: var(--glow-cyan);
}

.auth-logo h1 span { color: var(--neon-red); }

.auth-logo p {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 2px;
  margin-top: 6px;
  text-transform: uppercase;
}

/* ── Tabs ── */
.auth-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  margin-bottom: 28px;
}

.auth-tab {
  flex: 1;
  background: transparent;
  border: none;
  padding: 10px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 2px;
  cursor: pointer;
  text-transform: uppercase;
  transition: color 0.2s;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}

.auth-tab.active {
  color: var(--neon-cyan);
  border-bottom-color: var(--neon-cyan);
}

/* ── Form ── */
.auth-form { display: flex; flex-direction: column; gap: 18px; }
.auth-panel { display: none; }
.auth-panel.active { display: block; }

.field { display: flex; flex-direction: column; gap: 6px; }

.field label {
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--text-muted);
}

.field input {
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.field input:focus {
  border-color: var(--neon-cyan);
  box-shadow: 0 0 0 1px var(--neon-cyan)33;
}

.auth-submit {
  background: transparent;
  border: 1px solid var(--neon-cyan);
  color: var(--neon-cyan);
  padding: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 3px;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s;
  margin-top: 8px;
}

.auth-submit:hover {
  background: var(--neon-cyan);
  color: var(--bg-dark);
  box-shadow: var(--glow-cyan);
}

.auth-submit:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.auth-error {
  color: var(--neon-red);
  font-size: 12px;
  padding: 8px 12px;
  border: 1px solid var(--neon-red)44;
  background: var(--neon-red)11;
  display: none;
}

.auth-error.visible { display: block; }