* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            /* background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); */
            color: #1e1e1e;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }

        .login-container {
            width: 100%;
            max-width: 450px;
        }

        .login-box {
            background: white;
            border: 2px solid #1e1e1e;
            border-radius: 20px;
            padding: 60px 50px;
            box-shadow: -10px 10px 0px 0px black;
            transition: all 0.3s ease;
        }

        .login-box:hover {
            box-shadow: -12px 12px 0px 0px black;
        }

        .logo-section {
            text-align: center;
            margin-bottom: 40px;
        }

        .logo-section .logo {
            width: 80px;
            height: 80px;
            background: #1e1e1e;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fbfbfb;
            font-weight: bold;
            font-size: 14px;
            text-align: center;
            margin: 0 auto 20px;
        }

        .logo-section h1 {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .logo-section p {
            font-size: 14px;
            color: #666;
        }

        .login-tabs {
            display: flex;
            gap: 0;
            margin-bottom: 30px;
            border: 2px solid #1e1e1e;
            border-radius: 10px;
            overflow: hidden;
        }

        .login-tab {
            flex: 1;
            padding: 12px;
            text-align: center;
            cursor: pointer;
            background: #fbfbfb;
            border: none;
            font-weight: 600;
            font-size: 14px;
            transition: all 0.3s ease;
        }

        .login-tab.active {
            background: #ff5c5c;
            color: #1e1e1e;
        }

        .login-tab:hover {
            background: #f0f0f0;
        }

        .login-tab.active:hover {
            background: #ff5c5c;
        }

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

        label {
            display: block;
            font-weight: 600;
            margin-bottom: 8px;
            font-size: 14px;
            color: #1e1e1e;
        }

        input[type="text"],
        input[type="password"] {
            width: 100%;
            padding: 14px 16px;
            border: 2px solid #1e1e1e;
            border-radius: 10px;
            font-size: 14px;
            font-family: 'Inter', sans-serif;
            transition: all 0.3s ease;
            background: #fbfbfb;
        }

        input[type="text"]:focus,
        input[type="password"]:focus {
            outline: none;
            background: white;
            box-shadow: 0 0 0 3px rgba(255, 92, 92, 0.1);
            border-color: #ff5c5c;
        }

        input[type="text"]::placeholder,
        input[type="password"]::placeholder {
            color: #999;
        }

        .btn-login {
            width: 100%;
            background: #ff5c5c;
            color: #1e1e1e;
            border: 2px solid #1e1e1e;
            padding: 14px;
            border-radius: 10px;
            font-weight: 700;
            font-size: 16px;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: -5px 5px 0px 0px black;
            font-family: 'Inter', sans-serif;
        }

        .btn-login:hover {
            box-shadow: -7px 7px 0px 0px black;
            transform: translateY(-2px);
        }

        .btn-login:active {
            transform: translateY(0);
            box-shadow: -2px 2px 0px 0px black;
        }

        .alert {
            padding: 15px;
            border-radius: 10px;
            margin-bottom: 20px;
            font-size: 14px;
            border: 2px solid;
        }

        .alert-error {
            background: #ffe0e0;
            border-color: #ff5c5c;
            color: #c41e3a;
        }

        .alert-success {
            background: #e0ffe0;
            border-color: #4caf50;
            color: #2e7d32;
        }

        .back-link {
            display: inline-flex;
            align-items: center;
            color: #1e1e1e;
            text-decoration: none;
            font-weight: 600;
            font-size: 14px;
            margin-bottom: 30px;
            transition: color 0.3s ease;
        }

        .back-link:hover {
            color: #ff5c5c;
        }

        .back-link::before {
            content: "←";
            margin-right: 8px;
        }

        .admin-badge {
            display: inline-block;
            background: #ff5c5c;
            color: #1e1e1e;
            padding: 4px 12px;
            border-radius: 6px;
            font-size: 12px;
            font-weight: 700;
            margin-top: 10px;
        }

        .login-content {
            display: none;
        }

        .login-content.active {
            display: block;
        }

        @media (max-width: 768px) {
            .login-box {
                padding: 40px 25px;
            }

            .logo-section {
                margin-bottom: 30px;
            }

            .logo-section h1 {
                font-size: 24px;
            }

            input[type="text"],
            input[type="password"] {
                padding: 12px 14px;
                font-size: 16px;
            }

            .btn-login {
                padding: 12px;
                font-size: 14px;
            }
        }