:root {
  --ba-primary: #1a73e8;
  --ba-primary-dark: #1557b0;
  --ba-secondary: #0d1b2a;
  --ba-accent: #f4b400;
  --ba-bg: #f0f4f8;
  --ba-danger: #d93025;
  --ba-success: #1e8e3e;
  --ba-muted: #6b7280;
  --ba-border: #dce3ea;
  --ba-shadow: 0 16px 48px rgba(10, 30, 60, 0.16);
  --ba-radius: 18px;
}

*, *::before, *::after { box-sizing: border-box; }

body.ba-page {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: var(--ba-bg);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ba-secondary);
}

/* ── Shell ─────────────────────────────────────────────────── */
.ba-shell {
  width: 100%;
  max-width: 1080px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-radius: var(--ba-radius);
  overflow: hidden;
  box-shadow: var(--ba-shadow);
  background: #fff;
  min-height: 640px;
}

/* ── Hero ──────────────────────────────────────────────────── */
.ba-hero {
  position: relative;
  padding: 48px 44px;
  color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: linear-gradient(155deg, rgba(13, 27, 42, 0.92), rgba(26, 115, 232, 0.72)),
    url("https://images.unsplash.com/photo-1486406146926-c627a92ad1ab?auto=format&fit=crop&w=1200&q=80")
    center/cover no-repeat;
}

.ba-hero strong {
  font-family: "Poppins", sans-serif;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  opacity: 0.75;
}

.ba-hero h1 {
  font-family: "Poppins", sans-serif;
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  font-weight: 700;
  line-height: 1.22;
  margin: 14px 0 10px;
}

.ba-hero p {
  opacity: 0.88;
  line-height: 1.6;
  max-width: 360px;
  font-size: 0.95rem;
  margin-bottom: 0;
}

.ba-hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 24px 0 0;
}
.ba-hero-stat {
  background: rgba(255,255,255,0.10);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 10px;
  padding: 10px 8px;
  text-align: center;
}
.ba-hero-stat-num {
  font-family: "Poppins", sans-serif;
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1;
}
.ba-hero-stat-lbl {
  font-size: 0.7rem;
  opacity: 0.78;
  margin-top: 3px;
}

.ba-hero ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.ba-hero li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.91rem;
  background: rgba(255, 255, 255, 0.11);
  border: 1px solid rgba(255,255,255,0.14);
  padding: 10px 14px;
  border-radius: 10px;
}

.ba-hero li::before {
  content: "✓";
  color: var(--ba-accent);
  font-weight: 700;
  flex-shrink: 0;
}

/* ── Form panel ────────────────────────────────────────────── */
.ba-panel {
  padding: 44px 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: #fff;
  animation: baFadeUp 0.4s ease both;
}

@keyframes baFadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

.ba-panel-icon {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, #e8f0fe, #c6d9fc);
  border-radius: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 1.3rem;
  color: var(--ba-primary);
}

.ba-panel h2 {
  font-family: "Poppins", sans-serif;
  font-size: 1.6rem;
  font-weight: 700;
  margin: 0 0 6px;
  color: var(--ba-secondary);
}

.ba-sub {
  color: var(--ba-muted);
  font-size: 0.91rem;
  margin: 0 0 22px;
  line-height: 1.5;
}

/* ── Feedback ──────────────────────────────────────────────── */
.ba-feedback {
  display: none;
  padding: 11px 14px;
  border-radius: 9px;
  font-size: 0.88rem;
  margin-bottom: 16px;
  line-height: 1.45;
}
.ba-feedback.show { display: block; }
.ba-feedback.error { background: #fdecea; color: var(--ba-danger); border: 1px solid #f5c6c2; }
.ba-feedback.success { background: #e6f4ea; color: var(--ba-success); border: 1px solid #b7dfc3; }

/* ── Form fields ───────────────────────────────────────────── */
.ba-form-group { margin-bottom: 15px; }

.ba-form-group label {
  display: block;
  font-size: 0.83rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: #374151;
}

.ba-input-wrap { position: relative; }

.ba-input-icon {
  position: absolute;
  left: 13px;
  top: 50%;
  transform: translateY(-50%);
  color: #9ca3af;
  font-size: 0.88rem;
  pointer-events: none;
  z-index: 1;
}

.ba-form-group input,
.ba-form-group select {
  width: 100%;
  padding: 11px 14px 11px 40px;
  border: 1.5px solid var(--ba-border);
  border-radius: 9px;
  font-size: 0.94rem;
  font-family: "Inter", sans-serif;
  transition: border-color 0.15s, box-shadow 0.15s;
  background: #fff;
  color: var(--ba-secondary);
  outline: none;
}

.ba-form-group input::placeholder { color: #b0bac6; }

.ba-form-group input:focus,
.ba-form-group select:focus {
  border-color: var(--ba-primary);
  box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.13);
}

.ba-form-group input.invalid { border-color: var(--ba-danger); }

.ba-field-error {
  color: var(--ba-danger);
  font-size: 0.79rem;
  margin-top: 4px;
  display: none;
}
.ba-field-error.show { display: block; }

/* ── Password wrap & toggle ────────────────────────────────── */
.ba-password-wrap { position: relative; }
.ba-password-wrap input { padding-right: 44px; }

.ba-toggle-pw {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--ba-muted);
  cursor: pointer;
  padding: 4px 6px;
  font-size: 0.85rem;
  line-height: 1;
  transition: color 0.2s;
  z-index: 2;
}
.ba-toggle-pw:hover { color: var(--ba-primary); }

/* ── Password strength ─────────────────────────────────────── */
.ba-pw-strength {
  height: 3px;
  border-radius: 2px;
  margin-top: 5px;
  background: var(--ba-border);
  overflow: hidden;
}
.ba-pw-strength-fill {
  height: 100%;
  border-radius: 2px;
  width: 0%;
  transition: width 0.3s ease, background 0.3s ease;
}
.ba-pw-strength-label {
  font-size: 0.75rem;
  margin-top: 3px;
  color: var(--ba-muted);
  min-height: 14px;
}

/* ── Two-column row ────────────────────────────────────────── */
.ba-row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

/* ── Submit button ─────────────────────────────────────────── */
.ba-btn {
  width: 100%;
  padding: 13px 20px;
  border: none;
  border-radius: 9px;
  font-family: "Poppins", sans-serif;
  font-size: 0.97rem;
  font-weight: 600;
  cursor: pointer;
  letter-spacing: 0.3px;
  background: linear-gradient(135deg, var(--ba-primary), var(--ba-primary-dark));
  color: #fff;
  transition: filter 0.2s, transform 0.15s, box-shadow 0.2s;
  margin-top: 6px;
}
.ba-btn:hover:not(:disabled) {
  filter: brightness(1.08);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(26, 115, 232, 0.35);
}
.ba-btn:active { transform: translateY(0); }
.ba-btn:disabled { opacity: 0.65; cursor: not-allowed; }

/* ── Footer links ──────────────────────────────────────────── */
.ba-links {
  text-align: center;
  margin-top: 20px;
  font-size: 0.88rem;
  color: var(--ba-muted);
}
.ba-links a { color: var(--ba-primary); text-decoration: none; font-weight: 500; }
.ba-links a:hover { text-decoration: underline; }

.ba-footer-note {
  margin-top: 16px;
  font-size: 0.78rem;
  color: var(--ba-muted);
  text-align: center;
  line-height: 1.5;
}
.ba-footer-note a { color: var(--ba-primary); text-decoration: none; }
.ba-footer-note a:hover { text-decoration: underline; }

.ba-divider {
  border: none;
  border-top: 1px dashed var(--ba-border);
  margin: 18px 0 14px;
}

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 860px) {
  body.ba-page { padding: 12px; }
  .ba-shell { grid-template-columns: 1fr; max-width: 480px; min-height: auto; }
  .ba-hero { padding: 28px 24px; min-height: 200px; }
  .ba-hero ul, .ba-hero-stats { display: none; }
  .ba-panel { padding: 28px 24px 32px; }
  .ba-row-2 { grid-template-columns: 1fr; gap: 0; }
}