* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: #0f172a;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.login-container {
  background: #1e293b;
  backdrop-filter: blur(10px);
  border-radius: 20px;
  padding: 40px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  width: 100%;
  max-width: 400px;
  text-align: center;
  border: 1px solid #334155;
}

.logo {
  margin-bottom: 30px;
}

.logo-image {
  max-width: 200px;
  max-height: 80px;
  width: auto;
  height: auto;
  margin-bottom: 15px;
  object-fit: contain;
  transition: all 0.3s ease;
}

.logo-image:hover {
  transform: scale(1.05);
}

/* Logo yüklenemezse fallback text */
.logo-fallback {
  color: #f1f5f9;
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 10px;
  background: linear-gradient(135deg, #60a5fa 0%, #3b82f6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: none;
}

.logo p {
  color: #94a3b8;
  font-size: 1rem;
  font-weight: 500;
}

.form-group {
  margin-bottom: 25px;
  text-align: left;
}

.form-group label {
  display: block;
  color: #e2e8f0;
  font-weight: 600;
  margin-bottom: 8px;
  font-size: 0.9rem;
}

.input-wrapper {
  position: relative;
}

.form-group input {
  width: 100%;
  padding: 15px 20px;
  border: 2px solid #334155;
  border-radius: 12px;
  font-size: 1rem;
  transition: all 0.3s ease;
  background: #0f172a;
  color: #e2e8f0;
}

.form-group input:focus {
  outline: none;
  border-color: #60a5fa;
  background: #0f172a;
  box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.2);
}

.input-icon {
  position: absolute;
  right: 15px;
  top: 50%;
  transform: translateY(-50%);
  color: #64748b;
  font-size: 1.2rem;
}

.password-toggle {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(96, 165, 250, 0.1);
  border: 1px solid rgba(96, 165, 250, 0.3);
  color: #60a5fa;
  font-size: 1.1rem;
  cursor: pointer;
  padding: 8px;
  border-radius: 8px;
  transition: all 0.3s ease;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.password-toggle:hover {
  color: #3b82f6;
  background: rgba(96, 165, 250, 0.2);
  border-color: rgba(96, 165, 250, 0.5);
  box-shadow: 0 4px 8px rgba(96, 165, 250, 0.3);
  transform: translateY(-50%) scale(1.05);
}

.password-toggle:focus {
  outline: none;
  color: #3b82f6;
  background: rgba(96, 165, 250, 0.2);
  border-color: #60a5fa;
  box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.3);
}

.password-toggle:active {
  transform: translateY(-50%) scale(0.95);
  box-shadow: 0 2px 4px rgba(96, 165, 250, 0.4);
}

.login-btn {
  width: 100%;
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  color: white;
  border: none;
  padding: 15px 20px;
  border-radius: 12px;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-top: 10px;
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.login-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
}

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

.error-message {
  background: rgba(239, 68, 68, 0.15);
  color: #fca5a5;
  padding: 12px 16px;
  border-radius: 10px;
  margin-bottom: 20px;
  font-size: 0.9rem;
  font-weight: 500;
  border: 1px solid rgba(239, 68, 68, 0.3);
  display: none;
}

.success-message {
  background: rgba(16, 185, 129, 0.15);
  color: #6ee7b7;
  padding: 12px 16px;
  border-radius: 10px;
  margin-bottom: 20px;
  font-size: 0.9rem;
  font-weight: 500;
  border: 1px solid rgba(16, 185, 129, 0.3);
  display: none;
}

.warning-message {
  background: rgba(245, 158, 11, 0.15);
  color: #fcd34d;
  padding: 12px 16px;
  border-radius: 10px;
  margin-bottom: 20px;
  font-size: 0.9rem;
  font-weight: 500;
  border: 1px solid rgba(245, 158, 11, 0.3);
  display: block;
}



.footer {
  margin-top: 30px;
  color: #64748b;
  font-size: 0.8rem;
}

/* Loading state */
.login-btn.loading {
  background: #475569;
  cursor: not-allowed;
}

.login-btn.loading::after {
  content: '';
  width: 16px;
  height: 16px;
  border: 2px solid #ffffff;
  border-top: 2px solid transparent;
  border-radius: 50%;
  display: inline-block;
  animation: spin 1s linear infinite;
  margin-left: 10px;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Responsive design */
@media (max-width: 480px) {
.login-container {
  padding: 30px 25px;
  margin: 10px;
}

.logo-image {
  max-width: 150px;
  max-height: 60px;
}

.form-group input,
.login-btn {
  padding: 12px 16px;
}
}

/* Animation for container */
.login-container {
  animation: slideIn 0.6s ease-out;
}

@keyframes slideIn {
from {
  opacity: 0;
  transform: translateY(30px);
}
to {
  opacity: 1;
  transform: translateY(0);
}
}