/* ============================================================
   AUTH — Login/Register card and Chorus Selection card
   Both are full-screen centered card layouts used before the
   user reaches the main app.
   ============================================================ */

/* ----- Auth Section ----- */
#auth-section {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px 16px;
}

.auth-card {
  background: white;
  border-radius: 12px;
  padding: 36px 40px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.1);
  width: 100%;
  max-width: 420px;
}

.auth-card h1 {
  text-align: center;
  font-size: 22px;
  color: #1e3a5f;
  margin-bottom: 4px;
}

.auth-subtitle {
  text-align: center;
  color: #6b7280;
  font-size: 13px;
  margin-bottom: 24px;
}

/* Login / Register tabs */
#auth-tabs {
  display: flex;
  border-bottom: 2px solid #e5e7eb;
  margin-bottom: 20px;
}

.tab {
  flex: 1;
  padding: 10px 8px;
  border: none;
  background: none;
  cursor: pointer;
  font-size: 15px;
  color: #6b7280;
  margin-bottom: -2px;
  border-bottom: 3px solid transparent;
  transition: color 0.15s;
}

.tab.active {
  color: #1e3a5f;
  border-bottom-color: #1e3a5f;
  font-weight: 600;
}

.tab:hover:not(.active) { color: #374151; }

/* ----- Chorus Selection ----- */
#chorus-section {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px 16px;
}

.chorus-card {
  background: white;
  border-radius: 12px;
  padding: 36px 40px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.1);
  width: 100%;
  max-width: 400px;
}

.chorus-card h2 {
  text-align: center;
  color: #1e3a5f;
  margin-bottom: 24px;
  font-size: 20px;
}

.chorus-btn {
  display: block;
  width: 100%;
  padding: 14px 20px;
  margin-bottom: 10px;
  background: #f8fafc;
  border: 2px solid #e2e8f0;
  border-radius: 8px;
  cursor: pointer;
  font-size: 16px;
  color: #1a2332;
  text-align: left;
  transition: all 0.15s;
}

.chorus-btn:hover,
.chorus-btn.active {
  background: #eff6ff;
  border-color: #3b82f6;
  color: #1e3a5f;
  font-weight: 600;
}