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

        body {
            font-family: 'Poppins', sans-serif;
            background: #0a0a0a;
            color: #ffffff;
            min-height: 100vh;
            overflow-x: hidden;
        }


        .back-button {
  position: absolute;
  top: 20px;
  left: 20px;
  text-decoration: none;
  font-size: 24px;
  font-weight: bold;

  padding: 8px 12px;
  border-radius: 8px;

}
.geri-butonu {
  position: absolute;
  top: 80px;      /* Daha aşağıda */
  left: 65px;
  color: #00f5ff; /* Mor ton */
  font-size: 24px;
  text-decoration: none;
  background: transparent;
  padding: 8px;
  border-radius: 8px;
  transition: color 0.3s ease;
  z-index: 9999;
}

.geri-butonu:hover {
  color: #ffffff;
}



        /* Hero Background Style */
        .login-hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: radial-gradient(circle at 50% 50%, rgba(0, 245, 255, 0.1) 0%, rgba(0, 128, 255, 0.05) 50%, transparent 100%);
            overflow: hidden;
            padding: 2rem 0;
        }

        .login-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: 
                radial-gradient(circle at 20% 80%, rgba(0, 245, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(0, 128, 255, 0.1) 0%, transparent 50%);
            animation: pulse 4s ease-in-out infinite alternate;
        }

        .floating-elements {
            position: absolute;
            width: 100%;
            height: 100%;
            pointer-events: none;
        }

        .floating-element {
            position: absolute;
            width: 4px;
            height: 4px;
            background: #00f5ff;
            border-radius: 50%;
            opacity: 0.6;
            animation: float 6s ease-in-out infinite;
        }

        /* Background Content */
        .background-content {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            text-align: center;
            padding: 2rem;
            box-sizing: border-box;
            z-index: 0;
        }

        .background-content h1 {
            font-size: 3rem;
            margin-bottom: 1.5rem;
            background: linear-gradient(135deg, #ffffff, #00f5ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            font-weight: 700;
        }

        .background-content p {
            font-size: 1.3rem;
            max-width: 600px;
            margin-bottom: 2rem;
            color: #b0b0b0;
        }

        /* Auth Container */
        .auth-container {
            position: relative;
            z-index: 2;
            width: 100%;
            max-width: 600px;
            margin: 0 auto;
            padding: 4rem;
            
             
        }

        .auth-box {
            background: rgba(10, 10, 10, 0.9);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 20px;
            padding: 2.5rem;
            backdrop-filter: blur(10px);
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
             
        }

        .auth-box h1 {
            font-size: 1.8rem;
            margin-bottom: 1.5rem;
            color: #5bd5e7ff;
            text-align: center;
        }

        .auth-provider-btn {
            width: 100%;
            padding: 0.8rem;
            margin-bottom: 1rem;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 8px;
            color: #ffffff;
            font-size: 1rem;
            cursor: pointer;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
        }

        .auth-provider-btn:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(0, 245, 255, 0.3);
        }

        .auth-divider {
            position: relative;
            margin: 1.5rem 0;
            color: #666;
            text-align: center;
        }

        .auth-divider::before {
            content: "";
            position: absolute;
            top: 50%;
            left: 0;
            right: 0;
            height: 1px;
            background: rgba(255, 255, 255, 0.1);
            z-index: 1;
        }

        .auth-divider span {
            position: relative;
            z-index: 2;
            background: #0a0a0a;
            padding: 0 1rem;
        }

        .form-group {
            margin-bottom: 1.2rem;
            
        }

        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            color: #b0b0b0;
            font-size: 0.9rem;
          
            
        }
        

        .auth-form input, .auth-form select {
            width: 100%;
            padding: 0.8rem 1rem;
            background: rgba(51, 64, 84, 0.6);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 8px;
            font-size: 1rem;
            transition: all 0.3s ease;
            color:white;
        }

        .auth-form input:focus, .auth-form select:focus {
            outline: none;
            border-color: #00f5ff;
            box-shadow: 0 0 0 3px rgba(0, 247, 255, 1);
        }

        

        .password-strength {
            height: 4px;
            background: #333;
            border-radius: 2px;
            margin-top: 0.5rem;
            overflow: hidden;
        }

        .password-strength-bar {
            height: 100%;
            width: 0%;
            background: #ff4757;
            transition: width 0.3s ease, background 0.3s ease;
        }

        .form-row {
            display: flex;
            gap: 1rem;
        }

        .form-row .form-group {
            flex: 1;
            
        }

        .terms-checkbox {
            display: flex;
            align-items: flex-start;
            margin: 1.5rem 0;
           
        }

        .terms-checkbox input {
           
             width: 20px;
            height: 20px;
        }

        .terms-checkbox label {
            color: #b0b0b0;
            font-size: 0.9rem;
            line-height: 1.5;
        }

        .terms-checkbox a {
            color: #00f5ff;
            text-decoration: none;
        }

        .terms-checkbox a:hover {
            text-decoration: underline;
        }

        .auth-submit {
            width: 100%;
            padding: 0.8rem;
            background: linear-gradient(135deg, #00f5ff, #0080ff);
            color: #000;
            border: none;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .auth-submit:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(255, 0, 0, 0.3);
        }

        .auth-footer {
            margin-top: 1.5rem;
            color: #666;
            font-size: 0.9rem;
            text-align: center;
        }

        .auth-footer a {
            color: #00f5ff;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
        }

        .auth-footer a:hover {
            text-decoration: underline;
        }

        .error-message {
            color: #ff6b81;
            font-size: 0.8rem;
            margin-top: 0.3rem;
            display: none;
        }

        /* Animations */
        @keyframes pulse {
            0% { opacity: 0.5; }
            100% { opacity: 1; }
        }

        @keyframes float {
            0%, 100% { transform: translateY(0px) rotate(0deg); }
            50% { transform: translateY(-20px) rotate(180deg); }
        }

        /* Responsive */
        @media (max-width: 768px) {
            .background-content h1 {
                font-size: 2.2rem;
            }
            
            .background-content p {
                font-size: 1.1rem;
            }
            
            .auth-box {
                padding: 2rem;
            }
            
            .form-row {
                flex-direction: column;
                gap: 0;
            }
        }