:root {
            --primary: #5CC9CC;
            --secondary: #217476;
            --light: #f8f9fa;
            --text: #495057;
            --danger: #dc3545;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: Cambria, Georgia, serif;
        }

        body {
            background-color: var(--light);
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            padding: 1rem;
        }

        .login-container {
            background: white;
            border-radius: 12px;
            box-shadow: 0 6px 20px rgba(92, 201, 204, 0.3);
            width: 100%;
            max-width: 400px;
            padding: 2.5rem;
            text-align: center;
        }

        .logo {
            width: 100px;
            margin-bottom: 1.5rem;
        }

        h1 {
            color: var(--primary);
            margin-bottom: 1.5rem;
            font-size: 1.8rem;
        }

        .form-group {
            margin-bottom: 1.5rem;
            text-align: left;
        }

        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 500;
            color: var(--text);
        }

        input {
            width: 100%;
            padding: 0.75rem;
            border: 1px solid #ddd;
            border-radius: 6px;
            font-size: 1rem;
        }

        .btn {
            width: 100%;
            padding: 0.75rem;
            background: var(--primary);
            color: white;
            border: none;
            border-radius: 6px;
            font-size: 1rem;
            font-weight: 500;
            cursor: pointer;
            transition: background 0.3s ease;
        }

        .btn:hover {
            background: var(--secondary);
        }

        .error-message {
            color: var(--danger);
            margin-top: 1rem;
            display: none;
        }

        .input-icon {
            position: relative;
        }

        .input-icon i {
            position: absolute;
            right: 10px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--primary);
        }