/* ============================================
   TELA DE LOGIN - MODERNA E TECH
   ============================================ */

#loginScreen {
  display: none;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background-color: #0d0d0d;
  position: relative;
  overflow: hidden;
}

#loginScreen.active {
  display: flex;
}

/* Fundo quadriculado suave */
#loginScreen::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(158, 158, 158, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(158, 158, 158, 0.03) 1px, transparent 1px);
  background-size: 24px 24px;
  z-index: 0;
}

.login-container {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 450px;
  padding: 2rem;
}

.login-card {
  background: rgba(30, 30, 30, 0.95);
  border: 1px solid rgba(255, 215, 0, 0.2);
  border-radius: 20px;
  padding: 3rem;
  box-shadow:
    0 20px 60px rgba(0, 0, 0, 0.5),
    0 0 0 1px rgba(255, 215, 0, 0.1) inset;
  backdrop-filter: blur(20px);
  position: relative;
  overflow: hidden;
}

.login-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 215, 0, 0.4),
    transparent
  );
}

.login-header {
  text-align: center;
}

.login-header .logo {
  margin: 0 auto;
  width: 200px;
  height: 70px;
  margin-bottom: 0;
  display: block;
}

.login-form {
  margin-top: 2rem;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  letter-spacing: 0.3px;
}

.form-group input {
  width: 100%;
  padding: 1rem 1.25rem;
  background: rgba(20, 20, 20, 0.8);
  border: 2px solid rgba(255, 215, 0, 0.1);
  border-radius: 12px;
  color: var(--text-primary);
  font-size: 1rem;
  transition: all 0.3s ease;
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary);
  background: rgba(20, 20, 20, 0.95);
  box-shadow: 0 0 0 4px rgba(255, 215, 0, 0.1);
}

.password-input-wrapper {
  position: relative;
}

.password-toggle {
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.5rem;
  transition: color 0.3s;
}

.password-toggle:hover {
  color: var(--primary);
}

.btn-primary {
  width: 100%;
  padding: 1rem;
  background: linear-gradient(135deg, var(--primary) 0%, #ffd700 100%);
  border: none;
  border-radius: 12px;
  color: #000;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 1.5rem;
  box-shadow: 0 4px 15px rgba(255, 215, 0, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 215, 0, 0.4);
}

.btn-primary:active {
  transform: translateY(0);
}

.error-message {
  margin-top: 1rem;
  padding: 1rem;
  background: rgba(220, 53, 69, 0.15);
  border: 1px solid rgba(220, 53, 69, 0.3);
  border-radius: 12px;
  color: #ff6b6b;
  font-size: 0.9rem;
  display: none;
  animation: slideDown 0.3s ease;
}

.error-message.show {
  display: block;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsivo */
@media (max-width: 768px) {
  .login-card {
    padding: 2rem 1.5rem;
  }

  .login-header .logo {
    width: 220px;
    height: 100px;
  }
}