:root {
            --primary-blue: #0a1172;
            --secondary-blue: #1a2396;
            --accent-blue: #2d3fdb;
            --light-gray: #f8f9fa;
            --text-dark: #2c3e50;
        }

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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }

        .login-container {
            background: white;
            border-radius: 20px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
            overflow: hidden;
            max-width: 1000px;
            width: 100%;
            margin: auto;
        }

        /* Left Side - Login Form */
        .login-form-section {
            padding: 60px 50px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

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

        .logo-icon {
            width: 80px;
            height: 80px;
            background: var(--primary-blue);
            border-radius: 20px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            box-shadow: 0 4px 15px rgba(10, 17, 114, 0.3);
        }

        .logo-icon i {
            font-size: 40px;
            color: white;
        }

        .brand-name {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary-blue);
            margin: 0;
        }

        .brand-subtitle {
            font-size: 14px;
            color: #6c757d;
            margin-top: 5px;
        }

        .login-title {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 10px;
            text-align: center;
        }

        .login-subtitle {
            color: #6c757d;
            text-align: center;
            margin-bottom: 35px;
            font-size: 15px;
        }

        .form-floating {
            margin-bottom: 20px;
        }

        .form-control {
            border: 2px solid #e9ecef;
            border-radius: 10px;
            padding: 12px 20px;
            font-size: 15px;
            transition: all 0.3s ease;
        }

        .form-control:focus {
            border-color: var(--primary-blue);
            box-shadow: 0 0 0 0.2rem rgba(10, 17, 114, 0.1);
        }

        .form-floating label {
            padding: 1rem 1.25rem;
            color: #6c757d;
        }

        .form-check {
            margin: 20px 0;
        }

        .form-check-input:checked {
            background-color: var(--primary-blue);
            border-color: var(--primary-blue);
        }

        .btn-login {
            background: var(--primary-blue);
            color: white;
            border: none;
            border-radius: 10px;
            padding: 15px;
            font-size: 16px;
            font-weight: 600;
            width: 100%;
            transition: all 0.3s ease;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-top: 10px;
        }

        .btn-login:hover {
            background: var(--secondary-blue);
            transform: translateY(-2px);
            box-shadow: 0 5px 20px rgba(10, 17, 114, 0.4);
        }

        .alert-danger {
            border-radius: 10px;
            border: none;
            background: #ffe5e5;
            color: #c62828;
            padding: 12px 20px;
            margin-bottom: 20px;
        }

        /* Right Side - Gym Image/Info */
        .gym-info-section {
            background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-blue) 100%);
            padding: 60px 50px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            color: white;
            position: relative;
            overflow: hidden;
        }

        .gym-info-section::before {
            content: '';
            position: absolute;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
            animation: pulse 15s infinite;
        }

        .gym-content {
            position: relative;
            z-index: 1;
            text-align: center;
        }

        .gym-icon {
            font-size: 120px;
            margin-bottom: 30px;
            animation: float 3s ease-in-out infinite;
        }

        .gym-title {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 20px;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
        }

        .gym-description {
            font-size: 16px;
            line-height: 1.8;
            opacity: 0.95;
            margin-bottom: 30px;
        }

        .stats-container {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 40px;
            width: 100%;
        }

        .stat-item {
            text-align: center;
            padding: 20px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 15px;
            backdrop-filter: blur(10px);
        }

        .stat-number {
            font-size: 32px;
            font-weight: 700;
            display: block;
            margin-bottom: 5px;
        }

        .stat-label {
            font-size: 12px;
            opacity: 0.9;
            text-transform: uppercase;
            letter-spacing: 1px;
        }



        /* Loading Animation */
        .btn-login.loading {
            position: relative;
            color: transparent;
        }

        .btn-login.loading::after {
            content: '';
            position: absolute;
            width: 20px;
            height: 20px;
            top: 50%;
            left: 50%;
            margin-left: -10px;
            margin-top: -10px;
            border: 3px solid rgba(255, 255, 255, 0.3);
            border-top-color: white;
            border-radius: 50%;
            animation: spin 0.6s linear infinite;
        }