:root {
            --primary-color: #2563eb;
            --primary-dark: #1d4ed8;
            --secondary-color: #64748b;
            --success-color: #059669;
            --background-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            --card-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
        }

        body {
            background: #f8fafc;
            min-height: 100vh;
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
        }

        .login-container {
            backdrop-filter: blur(10px);
            background: rgba(255, 255, 255, 0.95);
            border-radius: 20px;
            box-shadow: var(--card-shadow);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .brand-section {
            background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
            color: white;
            border-radius: 20px 0 0 20px;
            padding: 3rem 2rem;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .brand-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
            opacity: 0.3;
        }

        .brand-content {
            position: relative;
            z-index: 1;
        }

        .brand-logo {
            width: 100%;
            height: 80px;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 2rem;
            backdrop-filter: blur(10px);
        }

        .brand-logo img {
           width: 100%;
            height: 80px;I
        }

        .brand-title {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            background: linear-gradient(45deg, #ffffff, #f1f5f9);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .brand-subtitle {
            font-size: 1.1rem;
            opacity: 0.9;
            margin-bottom: 2rem;
        }

        .feature-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .feature-list li {
            display: flex;
            align-items: center;
            margin-bottom: 1rem;
            font-size: 0.95rem;
        }

        .feature-list li i {
            margin-right: 0.75rem;
            color: rgba(255, 255, 255, 0.8);
            width: 16px;
        }

        .form-section {
            padding: 3rem 2.5rem;
        }

        .form-title {
            color: #1e293b;
            font-size: 1.75rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
        }

        .form-subtitle {
            color: var(--secondary-color);
            font-size: 0.95rem;
            margin-bottom: 2.5rem;
        }

        .form-floating {
            margin-bottom: 1.5rem;
        }

        .form-floating>.form-control {
            border: 2px solid #e2e8f0;
            border-radius: 12px;
            padding: 1rem 0.75rem;
            font-size: 1rem;
            transition: all 0.3s ease;
            background: rgba(248, 250, 252, 0.5);
        }

        .form-floating>.form-control:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
            background: white;
        }

        .form-floating>label {
            color: var(--secondary-color);
            padding: 1rem 0.75rem;
        }

        .input-group-text {
            background: rgba(248, 250, 252, 0.8);
            border: 2px solid #e2e8f0;
            border-right: none;
            border-radius: 12px 0 0 12px;
        }

        .btn-login {
            background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
            border: none;
            border-radius: 12px;
            padding: 1rem;
            font-size: 1.1rem;
            font-weight: 600;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .btn-login:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(37, 99, 235, 0.3);
        }

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

        .remember-me {
            margin: 1.5rem 0;
        }

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

        .forgot-password {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s ease;
        }

        .forgot-password:hover {
            color: var(--primary-dark);
        }

        .divider {
            display: flex;
            align-items: center;
            margin: 2rem 0;
            color: var(--secondary-color);
            font-size: 0.9rem;
        }

        .divider::before,
        .divider::after {
            content: '';
            flex: 1;
            height: 1px;
            background: #e2e8f0;
        }

        .divider span {
            padding: 0 1rem;
        }

        @media (max-width: 768px) {
            .brand-section {
                border-radius: 20px 20px 0 0;
                padding: 2rem 1.5rem;
            }

            .form-section {
                padding: 2rem 1.5rem;
            }

            .brand-title {
                font-size: 2rem;
            }
        }

        .invalid-feedback {
            display: none;
            width: 100%;
            margin-top: 0.25rem;
            font-size: 0.875em;
            color: #dc3545;
        }

        .was-validated .form-control:invalid~.invalid-feedback {
            display: block;
        }

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

        .floating-shapes::before,
        .floating-shapes::after {
            content: '';
            position: absolute;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            animation: float 6s ease-in-out infinite;
        }

        .floating-shapes::before {
            width: 120px;
            height: 120px;
            top: 20%;
            right: 10%;
            animation-delay: -2s;
        }

        .floating-shapes::after {
            width: 80px;
            height: 80px;
            bottom: 20%;
            left: 15%;
            animation-delay: -4s;
        }

        @keyframes float {

            0%,
            100% {
                transform: translateY(0px) rotate(0deg);
            }

            50% {
                transform: translateY(-20px) rotate(180deg);
            }
        }