/* ============================================================
   YouAİBOOKS — Giriş ekranı (SALONS-FLOW ile aynı görünüm)
============================================================ */

.login-screen {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: #0f172a;
  overflow: hidden;
}

.login-screen .login-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  opacity: 0.5;
}

.login-screen .login-bg .blur-rose {
  position: absolute;
  top: -10%;
  left: -10%;
  width: 50%;
  height: 50%;
  background: #e11d48;
  border-radius: 50%;
  filter: blur(150px);
  animation: login-pulse 2s ease-in-out infinite;
}

.login-screen .login-bg .blur-blue {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 40%;
  height: 40%;
  background: #2563eb;
  border-radius: 50%;
  filter: blur(150px);
}

@keyframes login-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.login-card {
  position: relative;
  width: 100%;
  max-width: 32rem;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(24px);
  padding: 1.5rem 2rem;
  border-radius: 3rem;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  border: 2px solid rgba(255, 255, 255, 0.2);
  text-align: center;
}

.login-brand {
  margin-bottom: 1.15rem;
  min-height: 122px;
  transform: translateY(10px);
}

.login-brand-logo {
  display: block;
  width: 320px;
  height: 64px;
  margin: 0 auto;
  object-fit: contain;
  mix-blend-mode: normal;
  filter: drop-shadow(0 2px 10px rgba(0, 0, 0, 0.35));
  transform: scale(4.5);
  transform-origin: center;
}

.login-brand .brand-name {
  font-size: 1.875rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  color: #fff;
}

.login-brand .brand-name span {
  color: #a78bfa;
}

.login-brand .brand-sub {
  font-size: 0.75rem;
  font-weight: 800;
  color: #94a3b8;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  margin-top: -0.45rem;
}

.login-screen form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.login-screen .form-group {
  text-align: left;
}

.login-screen .form-group label {
  display: block;
  font-size: 0.6875rem;
  font-weight: 800;
  color: #94a3b8;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 0.5rem;
  margin-left: 1rem;
}

.login-screen .form-group input {
  width: 100%;
  padding: 1rem 1.75rem;
  background: #1e293b;
  border: 2px solid #334155;
  border-radius: 2rem;
  font-size: 1.125rem;
  font-weight: 700;
  color: #fff;
  transition: border-color 0.2s;
}

.login-screen .form-group input::placeholder {
  color: #64748b;
}

.login-screen .form-group input:focus {
  border-color: rgba(167, 139, 250, 0.6);
  outline: none;
}

.login-screen .form-group input.error {
  border-color: #e11d48;
  box-shadow: 0 0 0 4px rgba(225, 29, 72, 0.1);
}

.login-screen .btn-login {
  width: 100%;
  padding: 1.25rem 1.5rem;
  margin-top: 1rem;
  background: linear-gradient(135deg, #7c3aed 0%, #a78bfa 100%);
  color: #fff;
  border: none;
  border-radius: 2.5rem;
  font-size: 1.25rem;
  font-weight: 800;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.1s;
  box-shadow: 0 10px 30px rgba(124, 58, 237, 0.3);
}

.login-screen .btn-login:hover:not(:disabled) {
  opacity: 0.95;
}

.login-screen .btn-login:active:not(:disabled) {
  transform: scale(0.98);
}

.login-screen .btn-login:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.login-screen .login-error {
  padding: 1rem 1.5rem;
  background: rgba(225, 29, 72, 0.1);
  border: 1px solid rgba(225, 29, 72, 0.3);
  color: #fda4af;
  border-radius: 1rem;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
}

.config-banner-on-login {
  margin-bottom: 1rem;
}

.login-screen .login-footer {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.6875rem;
  font-weight: 700;
  color: #64748b;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Giriş yapılmışsa login gizle, uygulama göster */
body.logged-in .login-screen {
  display: none !important;
}

body:not(.logged-in) .app-wrapper {
  display: none !important;
}