/* ═══════════════════════════════════════════════════════════════════════════
   LOGIN SCREEN — Xsolla-styled authentication
   ═══════════════════════════════════════════════════════════════════════════ */

#login-screen {
  position: fixed;
  inset: 0;
  background: linear-gradient(135deg, #0d0d0d 0%, #1a1a2e 50%, #16213e 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  opacity: 1;
  transition: opacity 0.3s ease;
}

#login-screen.login-fade-out {
  opacity: 0;
  pointer-events: none;
}

.login-container {
  width: 100%;
  max-width: 420px;
  padding: 20px;
}

.login-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 48px 40px;
  backdrop-filter: blur(20px);
  box-shadow:
    0 25px 50px -12px rgba(0, 0, 0, 0.5),
    0 0 0 1px rgba(255, 255, 255, 0.05) inset;
}

.login-card.shake {
  animation: shake 0.5s ease-in-out;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-10px); }
  40% { transform: translateX(10px); }
  60% { transform: translateX(-10px); }
  80% { transform: translateX(10px); }
}

/* Header */
.login-header {
  text-align: center;
  margin-bottom: 36px;
}

.login-logo {
  margin-bottom: 20px;
}

.login-logo svg {
  filter: drop-shadow(0 4px 12px rgba(255, 0, 92, 0.4));
}

.login-header h1 {
  font-size: 24px;
  font-weight: 700;
  color: #ffffff;
  margin: 0 0 8px;
  letter-spacing: -0.5px;
}

.login-header p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
  margin: 0;
}

/* Form */
.login-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.login-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.login-field label {
  font-size: 13px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.7);
}

.login-field input {
  width: 100%;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  font-size: 15px;
  color: #ffffff;
  transition: all 0.2s ease;
  outline: none;
}

.login-field input::placeholder {
  color: rgba(255, 255, 255, 0.3);
}

.login-field input:focus {
  background: rgba(255, 255, 255, 0.08);
  border-color: #ff005c;
  box-shadow: 0 0 0 3px rgba(255, 0, 92, 0.15);
}

/* Error message */
.login-error {
  font-size: 13px;
  color: #ff4757;
  text-align: center;
  min-height: 20px;
  opacity: 0;
  transform: translateY(-5px);
  transition: all 0.2s ease;
}

.login-error.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Submit button */
.login-btn {
  width: 100%;
  padding: 14px 24px;
  background: linear-gradient(135deg, #ff005c 0%, #ff2d78 100%);
  border: none;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  color: #ffffff;
  cursor: pointer;
  transition: all 0.2s ease;
  margin-top: 8px;
}

.login-btn:hover {
  background: linear-gradient(135deg, #ff2d78 0%, #ff005c 100%);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(255, 0, 92, 0.35);
}

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

/* Footer */
.login-footer {
  text-align: center;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.login-footer span {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.3);
}

/* Responsive */
@media (max-width: 480px) {
  .login-card {
    padding: 36px 24px;
  }

  .login-header h1 {
    font-size: 20px;
  }
}