:root {
            --primary: #2c3e50;
            --accent: #27ae60;
            --error: #e74c3c;
            --success: #2ecc71;
            --bg: #f4f7f6;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: var(--bg);
            margin: 0;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
        }

        /* Login Card */
        .auth-container {
            background: white;
            padding: 2.5rem;
            border-radius: 12px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            width: 100%;
            max-width: 400px;
        }

        .auth-container h2 {
            text-align: center;
            color: var(--primary);
            margin-bottom: 1.5rem;
        }

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

        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #555;
        }

        .form-group input {
            width: 100%;
            padding: 12px;
            border: 2px solid #ddd;
            border-radius: 6px;
            box-sizing: border-box;
            transition: border-color 0.3s;
        }

        .form-group input:focus {
            outline: none;
            border-color: var(--accent);
        }

        button {
            width: 100%;
            padding: 12px;
            background-color: var(--accent);
            color: white;
            border: none;
            border-radius: 6px;
            font-size: 1rem;
            font-weight: bold;
            cursor: pointer;
            transition: background 0.3s;
        }

        button:hover {
            background-color: #219150;
        }

        /* Dashboard View (Hidden by default) */
        #dashboard {
            display: none;
            text-align: center;
        }

        /* Toast Styling */
        #toast-container {
            position: fixed;
            top: 20px;
            right: 20px;
            z-index: 1000;
        }

        .toast {
            min-width: 280px;
            padding: 16px 20px;
            margin-bottom: 10px;
            border-radius: 8px;
            color: white;
            font-weight: 500;
            box-shadow: 0 5px 15px rgba(0,0,0,0.2);
            display: flex;
            align-items: center;
            animation: slideIn 0.4s ease forwards;
        }

        .toast.success { background-color: var(--success); }
        .toast.error { background-color: var(--error); }

        @keyframes slideIn {
            from { transform: translateX(120%); opacity: 0; }
            to { transform: translateX(0); opacity: 1; }
        }

        @keyframes fadeOut {
            from { opacity: 1; transform: translateY(0); }
            to { opacity: 0; transform: translateY(-20px); }
        }