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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 1rem;
            background: linear-gradient(135deg, #f5f7fa 0%, #e9ecef 100%);
        }

        .login-card {
            background: white;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(66, 133, 244, 0.1);
            width: 100%;
            max-width: 400px;
            padding: 2rem;
        }

        .logo-container {
            display: flex;
            justify-content: center;
            margin-bottom: 1rem;
        }

        .logo {
            width: 48px;
            height: 48px;
            background: linear-gradient(135deg, #4285f4 0%, #1967d2 100%);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .logo svg {
            width: 24px;
            height: 24px;
            color: white;
        }

        h1 {
            text-align: center;
            font-size: 1.5rem;
            color: #1a1a1a;
            margin-bottom: 0.5rem;
        }

        .subtitle {
            text-align: center;
            color: #666;
            margin-bottom: 2rem;
            font-size: 0.9rem;
        }

        .form-group {
            margin-bottom: 1.25rem;
        }

        label {
            display: block;
            margin-bottom: 0.5rem;
            color: #333;
            font-size: 0.875rem;
            font-weight: 500;
        }

        .input-wrapper {
            position: relative;
        }

        .input-icon {
            position: absolute;
            left: 12px;
            top: 50%;
            transform: translateY(-50%);
            color: #999;
            width: 16px;
            height: 16px;
        }

        input {
            width: 100%;
            padding: 0.75rem 0.75rem 0.75rem 2.5rem;
            border: 1px solid #d1d5db;
            border-radius: 8px;
            font-size: 0.9rem;
            transition: all 0.3s;
            background: white;
        }

        input:focus {
            outline: none;
            border-color: #4285f4;
            box-shadow: 0 0 0 3px rgba(66, 133, 244, 0.1);
        }

        input::placeholder {
            color: #999;
        }

        .error-message {
            color: #dc2626;
            font-size: 0.8rem;
            margin-top: 0.25rem;
            display: none;
        }

        .submit-btn {
            width: 100%;
            padding: 0.75rem;
            background: linear-gradient(135deg, #4285f4 0%, #1967d2 100%);
            color: white;
            border: none;
            border-radius: 8px;
            font-size: 1rem;
            font-weight: 500;
            cursor: pointer;
            transition: opacity 0.3s;
            margin-top: 1.5rem;
        }

        .submit-btn:hover {
            opacity: 0.9;
        }

        .submit-btn:disabled {
            opacity: 0.6;
            cursor: not-allowed;
        }

        @media (max-width: 480px) {
            .login-card {
                padding: 1.5rem;
            }
        }